vciy

CVE-2026-20012

INDEX BUILT · 2026-10-18

No source can show you its own past. This one can.

Print this page to keep the view as it stands on this date. Everything hidden behind a disclosure opens, and every receipt prints with its value.

A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Software, Cisco Secure Firewall Adaptive…

CVE-2026-200124 of 4 sources documented this
42

rank 42 = 0 + 22 + 0 + 20 + 0

rank@v1 · scheduled

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.00354  ·  without this subject the record ranks 42

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 8.6, from the CNA  ·  without this subject the record ranks 20

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 42

How much of the world it touches

NVD CPE configurations

401 products in the CPE ranges  ·  without this subject the record ranks 22

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 42

Hindsight · the state

0.00354EPSSNOT IN KEVas of 2026-10-18
Severity8.6 HIGHreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2026-03-26, 81 days at 0.00, as of 2026-06-15. arc-rules@v1

Foresight · where to check next

Cisco IOS and IOSCVE-2023-2608320012

This record is one instance of CWE-401, missing release of memory after effective lifetime. The index holds 1980 prior instances of this class, 2 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

Which product do you run? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

Watch this record

Matches your own product list against every record this index holds, and tells you when one of them moves.

What counts as a move

Choose your product above to watch it.

Set up a watchlist (free with an account: one stack of three products)

Record your call

Keep your verdict, your reason and the evidence together. The record takes its date when you save it.

Patch by…

Or open an investigation: an incident or a near miss on this CVE, kept with its evidence where anyone in your organisation can find it.

Choose your verdict, then sign in or use an email link. Your first 100 records are free. Evidence is frozen when the record is created.

Private to your organization unless you share it. Put the proof link in your ticket so a reviewer can inspect the basis for your call. See how decision records work.

Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete availability loss, with impact beyond the vulnerable componentreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-401 Missing Release of Memory after Effective Lifetimereceipt
Published consequencesCWE-401: Availability: DoS: Crash, Exit, or Restart, DoS: Instability, DoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory); Other: Reduce Performancecwe-consequences@4.20

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed inNo fix version in held sources, as the index stood on 15 Jun 2026.
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.
BOD 26-04 deadlineIf the system is reachable from the internet: 14 days. If not: fix at the next system upgrade.derived
Show full BOD 26-04 deadline

CISA has not scored it, so the directive's own defaults apply: automatable no, technical impact total. Calendar days from the KEV listing or from when you find it on a system, whichever is first. Federal agencies are bound from 7 Dec 2026, and contracts often carry it to suppliers. The directive and its table

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA8.6 HIGHreceipt
Exploit probability0.00354 · top 73% of all CVEsreceipt
Blast breadth4 products across 2 vendorsderived
Assigned byciscoreceipt
Recorded changes5 · last 18 Oct 2026derived

Affected & Fixed Versions as published

Affected productCisco IOS; Cisco Secure Firewall Adaptive Security Appliance (ASA) Software; Cisco IOS XE Software; Cisco Secure Firewall Threat Defense (FTD) Softwarereceipt
Published rangescisco secure firewall threat defense 6.2.3; cisco secure firewall threat defense 6.2.3.1; cisco secure firewall threat defense 6.2.3.2; cisco secure firewall threat defense 6.2.3.3receipt
Show all 401 published ranges
cisco secure firewall threat defense 6.2.3
cisco secure firewall threat defense 6.2.3.1
cisco secure firewall threat defense 6.2.3.2
cisco secure firewall threat defense 6.2.3.3
cisco secure firewall threat defense 6.2.3.4
cisco secure firewall threat defense 6.2.3.5
cisco secure firewall threat defense 6.2.3.6
cisco secure firewall threat defense 6.2.3.7
cisco secure firewall threat defense 6.2.3.8
cisco secure firewall threat defense 6.2.3.9
cisco secure firewall threat defense 6.2.3.10
cisco secure firewall threat defense 6.2.3.11
cisco secure firewall threat defense 6.2.3.12
cisco secure firewall threat defense 6.2.3.13
cisco secure firewall threat defense 6.2.3.14
cisco secure firewall threat defense 6.2.3.15
cisco secure firewall threat defense 6.2.3.16
cisco secure firewall threat defense 6.2.3.17
cisco secure firewall threat defense 6.2.3.18
cisco secure firewall threat defense 6.4.0
cisco secure firewall threat defense 6.4.0.1
cisco secure firewall threat defense 6.4.0.2
cisco secure firewall threat defense 6.4.0.3
cisco secure firewall threat defense 6.4.0.4
cisco secure firewall threat defense 6.4.0.5
cisco secure firewall threat defense 6.4.0.6
cisco secure firewall threat defense 6.4.0.7
cisco secure firewall threat defense 6.4.0.8
cisco secure firewall threat defense 6.4.0.9
cisco secure firewall threat defense 6.4.0.10
cisco secure firewall threat defense 6.4.0.11
cisco secure firewall threat defense 6.4.0.12
cisco secure firewall threat defense 6.4.0.13
cisco secure firewall threat defense 6.4.0.14
cisco secure firewall threat defense 6.4.0.15
cisco secure firewall threat defense 6.4.0.16
cisco secure firewall threat defense 6.4.0.17
cisco secure firewall threat defense 6.4.0.18
cisco secure firewall threat defense 6.6.0
cisco secure firewall threat defense 6.6.0.1
cisco secure firewall threat defense 6.6.1
cisco secure firewall threat defense 6.6.3
cisco secure firewall threat defense 6.6.4
cisco secure firewall threat defense 6.6.5
cisco secure firewall threat defense 6.6.5.1
cisco secure firewall threat defense 6.6.5.2
cisco secure firewall threat defense 6.6.7
cisco secure firewall threat defense 6.6.7.1
cisco secure firewall threat defense 6.6.7.2
cisco secure firewall threat defense 7.0.0
cisco secure firewall threat defense 7.0.0.1
cisco secure firewall threat defense 7.0.1
cisco secure firewall threat defense 7.0.1.1
cisco secure firewall threat defense 7.0.2
cisco secure firewall threat defense 7.0.2.1
cisco secure firewall threat defense 7.0.3
cisco secure firewall threat defense 7.0.4
cisco secure firewall threat defense 7.0.5
cisco secure firewall threat defense 7.0.6
cisco secure firewall threat defense 7.0.6.1
cisco secure firewall threat defense 7.0.6.2
cisco secure firewall threat defense 7.0.6.3
cisco secure firewall threat defense 7.0.7
cisco secure firewall threat defense 7.0.8
cisco secure firewall threat defense 7.0.8.1
cisco secure firewall threat defense 7.1.0
cisco secure firewall threat defense 7.1.0.1
cisco secure firewall threat defense 7.1.0.2
cisco secure firewall threat defense 7.1.0.3
cisco secure firewall threat defense 7.2.0
cisco secure firewall threat defense 7.2.0.1
cisco secure firewall threat defense 7.2.1
cisco secure firewall threat defense 7.2.2
cisco secure firewall threat defense 7.2.3
cisco secure firewall threat defense 7.2.4
cisco secure firewall threat defense 7.2.4.1
cisco secure firewall threat defense 7.2.5
cisco secure firewall threat defense 7.2.5.1
cisco secure firewall threat defense 7.2.5.2
cisco secure firewall threat defense 7.2.6
cisco secure firewall threat defense 7.2.7
cisco secure firewall threat defense 7.2.8
cisco secure firewall threat defense 7.2.8.1
cisco secure firewall threat defense 7.2.9
cisco secure firewall threat defense 7.2.10
cisco secure firewall threat defense 7.2.10.2
cisco secure firewall threat defense 7.3.0
cisco secure firewall threat defense 7.3.1
cisco secure firewall threat defense 7.3.1.1
cisco secure firewall threat defense 7.3.1.2
cisco secure firewall threat defense 7.4.0
cisco secure firewall threat defense 7.4.1
cisco secure firewall threat defense 7.4.1.1
cisco secure firewall threat defense 7.4.2
cisco secure firewall threat defense 7.4.2.1
cisco secure firewall threat defense 7.4.2.2
cisco secure firewall threat defense 7.4.2.3
cisco secure firewall threat defense 7.4.2.4
cisco secure firewall threat defense 7.6.0
cisco secure firewall threat defense 7.6.1
cisco secure firewall threat defense 7.6.2
cisco secure firewall threat defense 7.6.2.1
cisco secure firewall threat defense 7.7.0
cisco secure firewall threat defense 7.7.10
cisco secure firewall threat defense 7.7.10.1
cisco adaptive security appliance software 9.8.1
cisco adaptive security appliance software 9.8.1.5
cisco adaptive security appliance software 9.8.1.7
cisco adaptive security appliance software 9.8.2
cisco adaptive security appliance software 9.8.2.8
cisco adaptive security appliance software 9.8.2.14
cisco adaptive security appliance software 9.8.2.15
cisco adaptive security appliance software 9.8.2.17
cisco adaptive security appliance software 9.8.2.20
cisco adaptive security appliance software 9.8.2.24
cisco adaptive security appliance software 9.8.2.26
cisco adaptive security appliance software 9.8.2.28
cisco adaptive security appliance software 9.8.2.33
cisco adaptive security appliance software 9.8.2.35
cisco adaptive security appliance software 9.8.2.38
cisco adaptive security appliance software 9.8.2.45
cisco adaptive security appliance software 9.8.3
cisco adaptive security appliance software 9.8.3.8
cisco adaptive security appliance software 9.8.3.11
cisco adaptive security appliance software 9.8.3.14
cisco adaptive security appliance software 9.8.3.16
cisco adaptive security appliance software 9.8.3.18
cisco adaptive security appliance software 9.8.3.21
cisco adaptive security appliance software 9.8.3.26
cisco adaptive security appliance software 9.8.3.29
cisco adaptive security appliance software 9.8.4
cisco adaptive security appliance software 9.8.4.3
cisco adaptive security appliance software 9.8.4.7
cisco adaptive security appliance software 9.8.4.8
cisco adaptive security appliance software 9.8.4.10
cisco adaptive security appliance software 9.8.4.12
cisco adaptive security appliance software 9.8.4.15
cisco adaptive security appliance software 9.8.4.17
cisco adaptive security appliance software 9.8.4.20
cisco adaptive security appliance software 9.8.4.22
cisco adaptive security appliance software 9.8.4.25
cisco adaptive security appliance software 9.8.4.26
cisco adaptive security appliance software 9.8.4.29
cisco adaptive security appliance software 9.8.4.32
cisco adaptive security appliance software 9.8.4.33
cisco adaptive security appliance software 9.8.4.34
cisco adaptive security appliance software 9.8.4.35
cisco adaptive security appliance software 9.8.4.39
cisco adaptive security appliance software 9.8.4.40
cisco adaptive security appliance software 9.8.4.41
cisco adaptive security appliance software 9.8.4.43
cisco adaptive security appliance software 9.8.4.44
cisco adaptive security appliance software 9.8.4.45
cisco adaptive security appliance software 9.8.4.46
cisco adaptive security appliance software 9.8.4.48
cisco adaptive security appliance software 9.12.1
cisco adaptive security appliance software 9.12.1.2
cisco adaptive security appliance software 9.12.1.3
cisco adaptive security appliance software 9.12.2
cisco adaptive security appliance software 9.12.2.1
cisco adaptive security appliance software 9.12.2.4
cisco adaptive security appliance software 9.12.2.5
cisco adaptive security appliance software 9.12.2.9
cisco adaptive security appliance software 9.12.3
cisco adaptive security appliance software 9.12.3.2
cisco adaptive security appliance software 9.12.3.7
cisco adaptive security appliance software 9.12.3.9
cisco adaptive security appliance software 9.12.3.12
cisco adaptive security appliance software 9.12.4
cisco adaptive security appliance software 9.12.4.2
cisco adaptive security appliance software 9.12.4.4
cisco adaptive security appliance software 9.12.4.7
cisco adaptive security appliance software 9.12.4.8
cisco adaptive security appliance software 9.12.4.10
cisco adaptive security appliance software 9.12.4.13
cisco adaptive security appliance software 9.12.4.18
cisco adaptive security appliance software 9.12.4.24
cisco adaptive security appliance software 9.12.4.26
cisco adaptive security appliance software 9.12.4.29
cisco adaptive security appliance software 9.12.4.30
cisco adaptive security appliance software 9.12.4.35
cisco adaptive security appliance software 9.12.4.37
cisco adaptive security appliance software 9.12.4.38
cisco adaptive security appliance software 9.12.4.39
cisco adaptive security appliance software 9.12.4.40
cisco adaptive security appliance software 9.12.4.41
cisco adaptive security appliance software 9.12.4.47
cisco adaptive security appliance software 9.12.4.48
cisco adaptive security appliance software 9.12.4.50
cisco adaptive security appliance software 9.12.4.52
cisco adaptive security appliance software 9.12.4.54
cisco adaptive security appliance software 9.12.4.55
cisco adaptive security appliance software 9.12.4.56
cisco adaptive security appliance software 9.12.4.58
cisco adaptive security appliance software 9.12.4.62
cisco adaptive security appliance software 9.12.4.65
cisco adaptive security appliance software 9.12.4.67
cisco adaptive security appliance software 9.14.1
cisco adaptive security appliance software 9.14.1.6
cisco adaptive security appliance software 9.14.1.10
cisco adaptive security appliance software 9.14.1.15
cisco adaptive security appliance software 9.14.1.19
cisco adaptive security appliance software 9.14.1.30
cisco adaptive security appliance software 9.14.2
cisco adaptive security appliance software 9.14.2.4
cisco adaptive security appliance software 9.14.2.8
cisco adaptive security appliance software 9.14.2.13
cisco adaptive security appliance software 9.14.2.15
cisco adaptive security appliance software 9.14.3
cisco adaptive security appliance software 9.14.3.1
cisco adaptive security appliance software 9.14.3.9
cisco adaptive security appliance software 9.14.3.11
cisco adaptive security appliance software 9.14.3.13
cisco adaptive security appliance software 9.14.3.15
cisco adaptive security appliance software 9.14.3.18
cisco adaptive security appliance software 9.14.4
cisco adaptive security appliance software 9.14.4.6
cisco adaptive security appliance software 9.14.4.7
cisco adaptive security appliance software 9.14.4.12
cisco adaptive security appliance software 9.14.4.13
cisco adaptive security appliance software 9.14.4.14
cisco adaptive security appliance software 9.14.4.15
cisco adaptive security appliance software 9.14.4.17
cisco adaptive security appliance software 9.14.4.22
cisco adaptive security appliance software 9.14.4.23
cisco adaptive security appliance software 9.14.4.24
cisco adaptive security appliance software 9.16.1
cisco adaptive security appliance software 9.16.1.28
cisco adaptive security appliance software 9.16.2
cisco adaptive security appliance software 9.16.2.3
cisco adaptive security appliance software 9.16.2.7
cisco adaptive security appliance software 9.16.2.11
cisco adaptive security appliance software 9.16.2.13
cisco adaptive security appliance software 9.16.2.14
cisco adaptive security appliance software 9.16.3
cisco adaptive security appliance software 9.16.3.3
cisco adaptive security appliance software 9.16.3.14
cisco adaptive security appliance software 9.16.3.15
cisco adaptive security appliance software 9.16.3.19
cisco adaptive security appliance software 9.16.3.23
cisco adaptive security appliance software 9.16.4
cisco adaptive security appliance software 9.16.4.9
cisco adaptive security appliance software 9.16.4.14
cisco adaptive security appliance software 9.16.4.19
cisco adaptive security appliance software 9.16.4.27
cisco adaptive security appliance software 9.16.4.38
cisco adaptive security appliance software 9.16.4.39
cisco adaptive security appliance software 9.16.4.42
cisco adaptive security appliance software 9.16.4.48
cisco adaptive security appliance software 9.16.4.55
cisco adaptive security appliance software 9.16.4.57
cisco adaptive security appliance software 9.16.4.61
cisco adaptive security appliance software 9.16.4.62
cisco adaptive security appliance software 9.16.4.67
cisco adaptive security appliance software 9.16.4.70
cisco adaptive security appliance software 9.16.4.71
cisco adaptive security appliance software 9.16.4.76
cisco adaptive security appliance software 9.16.4.82
cisco adaptive security appliance software 9.16.4.84
cisco adaptive security appliance software 9.17.1
cisco adaptive security appliance software 9.17.1.7
cisco adaptive security appliance software 9.17.1.9
cisco adaptive security appliance software 9.17.1.10
cisco adaptive security appliance software 9.17.1.11
cisco adaptive security appliance software 9.17.1.13
cisco adaptive security appliance software 9.17.1.15
cisco adaptive security appliance software 9.17.1.20
cisco adaptive security appliance software 9.17.1.30
cisco adaptive security appliance software 9.17.1.33
cisco adaptive security appliance software 9.17.1.39
cisco adaptive security appliance software 9.17.1.45
cisco adaptive security appliance software 9.17.1.46
cisco adaptive security appliance software 9.18.1
cisco adaptive security appliance software 9.18.1.3
cisco adaptive security appliance software 9.18.2
cisco adaptive security appliance software 9.18.2.5
cisco adaptive security appliance software 9.18.2.7
cisco adaptive security appliance software 9.18.2.8
cisco adaptive security appliance software 9.18.3
cisco adaptive security appliance software 9.18.3.39
cisco adaptive security appliance software 9.18.3.46
cisco adaptive security appliance software 9.18.3.53
cisco adaptive security appliance software 9.18.3.55
cisco adaptive security appliance software 9.18.3.56
cisco adaptive security appliance software 9.18.4
cisco adaptive security appliance software 9.18.4.5
cisco adaptive security appliance software 9.18.4.8
cisco adaptive security appliance software 9.18.4.22
cisco adaptive security appliance software 9.18.4.24
cisco adaptive security appliance software 9.18.4.29
cisco adaptive security appliance software 9.18.4.34
cisco adaptive security appliance software 9.18.4.40
cisco adaptive security appliance software 9.18.4.47
cisco adaptive security appliance software 9.18.4.50
cisco adaptive security appliance software 9.18.4.52
cisco adaptive security appliance software 9.18.4.53
cisco adaptive security appliance software 9.18.4.57
cisco adaptive security appliance software 9.18.4.66
cisco adaptive security appliance software 9.18.4.67
cisco adaptive security appliance software 9.18.4.68
cisco adaptive security appliance software 9.19.1
cisco adaptive security appliance software 9.19.1.5
cisco adaptive security appliance software 9.19.1.9
cisco adaptive security appliance software 9.19.1.12
cisco adaptive security appliance software 9.19.1.18
cisco adaptive security appliance software 9.19.1.22
cisco adaptive security appliance software 9.19.1.24
cisco adaptive security appliance software 9.19.1.27
cisco adaptive security appliance software 9.19.1.28
cisco adaptive security appliance software 9.19.1.31
cisco adaptive security appliance software 9.19.1.37
cisco adaptive security appliance software 9.19.1.38
cisco adaptive security appliance software 9.19.1.42
cisco adaptive security appliance software 9.20.1
cisco adaptive security appliance software 9.20.1.5
cisco adaptive security appliance software 9.20.2
cisco adaptive security appliance software 9.20.2.10
cisco adaptive security appliance software 9.20.2.21
cisco adaptive security appliance software 9.20.2.22
cisco adaptive security appliance software 9.20.3
cisco adaptive security appliance software 9.20.3.4
cisco adaptive security appliance software 9.20.3.7
cisco adaptive security appliance software 9.20.3.9
cisco adaptive security appliance software 9.20.3.10
cisco adaptive security appliance software 9.20.3.13
cisco adaptive security appliance software 9.20.3.16
cisco adaptive security appliance software 9.20.3.20
cisco adaptive security appliance software 9.20.4
cisco adaptive security appliance software 9.20.4.7
cisco adaptive security appliance software 9.22.1.1
cisco adaptive security appliance software 9.22.1.2
cisco adaptive security appliance software 9.22.1.3
cisco adaptive security appliance software 9.22.1.6
cisco adaptive security appliance software 9.22.2
cisco adaptive security appliance software 9.22.2.4
cisco adaptive security appliance software 9.22.2.9
cisco adaptive security appliance software 9.23.1
cisco adaptive security appliance software 9.23.1.3
cisco adaptive security appliance software 9.23.1.7
cisco adaptive security appliance software 9.23.1.13
cisco ios 15.0\(2\)ea
cisco ios 15.0\(2\)ea1
cisco ios 15.0\(2\)ej
cisco ios 15.0\(2\)ej1
cisco ios 15.0\(2\)ek
cisco ios 15.0\(2\)ek1
cisco ios 15.0\(2\)ey
cisco ios 15.0\(2\)ey1
cisco ios 15.0\(2\)ey2
cisco ios 15.0\(2\)ey3
cisco ios 15.0\(2\)se
cisco ios 15.0\(2\)se1
cisco ios 15.0\(2\)se2
cisco ios 15.0\(2\)se3
cisco ios 15.0\(2\)se4
cisco ios 15.0\(2\)se5
cisco ios 15.0\(2\)se6
cisco ios 15.0\(2\)se7
cisco ios 15.0\(2\)se8
cisco ios 15.0\(2\)se9
cisco ios 15.0\(2\)se10
cisco ios 15.0\(2\)se10a
cisco ios 15.0\(2\)se11
cisco ios 15.0\(2\)se12
cisco ios 15.0\(2\)se13
cisco ios 15.1\(1\)s
cisco ios 15.1\(1\)s1
cisco ios 15.1\(1\)s2
cisco ios 15.1\(1\)sg
cisco ios 15.1\(1\)sg1
cisco ios 15.1\(1\)sg2
cisco ios 15.1\(1\)sy
cisco ios 15.1\(1\)sy1
cisco ios 15.1\(1\)sy2
cisco ios 15.1\(1\)sy3
cisco ios 15.1\(1\)sy4
cisco ios 15.1\(1\)sy5
cisco ios 15.1\(1\)sy6
cisco ios 15.1\(2\)gc
cisco ios 15.1\(2\)gc1
cisco ios 15.1\(2\)gc2
cisco ios 15.1\(2\)s
cisco ios 15.1\(2\)s1
cisco ios 15.1\(2\)s2
cisco ios 15.1\(2\)sg
cisco ios 15.1\(2\)sg1
cisco ios 15.1\(2\)sg2
cisco ios 15.1\(2\)sg3
cisco ios 15.1\(2\)sg4
cisco ios 15.1\(2\)sg5
cisco ios 15.1\(2\)sg6
cisco ios 15.1\(2\)sg7
cisco ios 15.1\(2\)sg8
cisco ios 15.1\(2\)sy
cisco ios 15.1\(2\)sy1
cisco ios 15.1\(2\)sy2
cisco ios 15.1\(2\)sy3
cisco ios 15.1\(2\)sy4
cisco ios 15.1\(2\)sy4a
cisco ios 15.1\(2\)sy5
more ranges not held

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$10,800over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$10,800 = $4.99M incident cost x 0.6121449559255632 exposure x 0.00354 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Did this affect your environment?Answering needs an account.

Attack path

Unauthenticated network requestno credentials, no interactionCisco IOSCWE-401 weaknessAdjacent componentsscope changeAvailability lossA:Hexploits CWE-401scope changedata compromise

What it is stated by the CNA

A vulnerability in the Internet Key Exchange version 2 (IKEv2) feature of Cisco IOS Software, Cisco IOS XE Software, Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to trigger a memory leak, resulting in a denial of service (DoS) condition on an affected device. This vulnerability is due to improper parsing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. receipt

Read the rest of the CNA's description

A successful exploit of Cisco IOS Software and IOS XE Software could allow the attacker to cause the affected device to reload, resulting in a DoS condition. A successful exploit of Cisco Secure Firewall ASA Software and Secure FTD Software could allow the attacker to partially exhaust system memory, resulting in system instability, such as the inability to establish new IKEv2 VPN sessions. A manual reboot of the device is required to recover from this condition.

NVD's analysis a second authority

weakness
CWE-401
affected versions
cisco secure firewall threat defense 6.2.3; cisco secure firewall threat defense 6.2.3.1; cisco secure firewall threat defense 6.2.3.2; and 398 more, listed in full below
also scored by
psirt@cisco.com 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

check it yourself sec.cloudapps.cisco.com receipt

Movement the material steps

26 Mar 20260.00099
15 Jun 20260.00354 · scoring model v2026.06.15
Show all 5 observations
26 Mar 20260.00099
31 Mar 20260.0013
26 Apr 20260.00142
1 Jun 20260.00148
15 Jun 20260.00354

5 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.00354Published2026-03-25Index as of2026-06-15

The record had been public for 2 months when this index was last written.

Published 2026-03-25 receipt · Index as of 2026-06-15 derived

The pattern, elsewhere

This record is one instance of CWE-401, missing release of memory after effective lifetime. The index holds 1980 prior instances of this class, 2 KEV-listed. The nearest of its KEV-listed records are drawn beside this. cwe-consequences@4.20

CVE-2018-0158 · Cisco IOS and IOS XEmatches 9 of 9KEV listed · 2018receipt
CVE-2023-26083matches 3 of 8KEV listed · 2023receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

1980 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

Siblings and hubs

Records related to this one

Its defect family

cisco ios

Of the 3 records in this family that state one, this holds the lowest EPSS percentile: 0.28302.

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Family membership: held values

This record is one of a group, and the group's page describes all of them. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

Browse the index from here

These are index-wide views, not findings about CVE-2026-20012.

What usually comes next

Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.

Everything on this page is free. Public data. Withholding it protects nothing.