CVE-2019-6577
Telemetry drift only. No threshold crossed and no authority ruling changed.
CVE record, CISA KEV and EPSS as of 2026-10-18.
CVEs like this one computed, by meaning
What to do now held facts and links
- Upgrade to the fixed version for your release line, or later: simatic wincc runtime 15.1; simatic hmi comfort outdoor panels firmware 15.1; simatic hmi comfort panels firmware 15.1; simatic hmi ktp mobile panels ktp400f firmware 15.1… upper bounds of the CVE record's affected ranges
- Record your decision, dated and frozen with today's evidence: patch by a date · mitigated by a compensating control · deferred · accepted the risk · not affected
- Check your version against the ranges this record publishes.
What it is stated by the CNA
A vulnerability has been identified in SIMATIC HMI Comfort Panels 4" - 22" (All versions < V15.1 Update 1), SIMATIC HMI Comfort Outdoor Panels 7" & 15" (All versions < V15.1 Update 1), SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 und KTP900F (All versions < V15.1 Update 1), SIMATIC WinCC Runtime Advanced (All versions < V15.1 Update 1), SIMATIC WinCC Runtime Professional (All versions < V15.1 Update 1), SIMATIC WinCC (TIA Portal) (All versions < V15.1 Update 1), SIMATIC HMI Classic Devices (TP/MP/OP/MP Mobile Panel) (All versions). The integrated web server could allow Cross-Site Scripting (XSS) attacks if an attacker is able to modify particular parts of the device configuration via SNMP. The security vulnerability could be exploited by an attacker with network access to the affected system. Successful exploitation requires system privileges and user interaction. …
- weakness
- CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
- affected
- Siemens AG SIMATIC HMI Comfort Panels 4" - 22"; Siemens AG SIMATIC HMI Comfort Outdoor Panels 7" & 15"; Siemens AG SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 und KTP900F; Siemens AG SIMATIC WinCC Runtime Advanced; Siemens AG SIMATIC WinCC Runtime Professional; Siemens AG SIMATIC WinCC (TIA Portal); Siemens AG SIMATIC HMI Classic Devices (TP/MP/OP/MP Mobile Panel)
- published ranges
- siemens simatic hmi comfort panels firmware < 15.1; siemens simatic hmi comfort outdoor panels firmware < 15.1; siemens simatic hmi ktp mobile panels ktp400f firmware < 15.1; siemens simatic hmi ktp mobile panels ktp700 firmware < 15.1; and 5 more on the CVE page
- first unaffected version, by branch
- simatic wincc runtime 15.1; simatic hmi comfort outdoor panels firmware 15.1; simatic hmi comfort panels firmware 15.1; simatic hmi ktp mobile panels ktp400f firmware 15.1…
- assigned by
- siemens
- published
- 2019-05-14
check us cert-portal.siemens.com securityfocus.com us-cert.gov
Exploit code held, dated
- exploit code
- None held in the PoC-in-GitHub feed. A public repository changes this brief.
What moved held, dated
| date | EPSS | event |
|---|---|---|
| 14 Apr 2021 | 0.00884 | |
| 6 Jan 2022 | 0.03849 | |
| 4 Feb 2022 | 0.0307 | |
| 1 Apr 2022 | 0.0089 | |
| 7 Mar 2023 | 0.00068 | scoring model v2023.03.01 |
| 17 Mar 2025 | 0.00289 | scoring model v2025.03.14 |
| 15 Jun 2026 | 0.00892 | scoring model v2026.06.15 |
| 30 Aug 2026 | 0.00892 | |
| 4 Sep 2026 | 0.00876 | |
| 5 Sep 2026 | 0.01052 | |
| 6 Sep 2026 | 0.00876 |
22 observations held. A step marked with a scoring model moved because the measurement was replaced, not because the vulnerability changed.
Outside the record researched, cited
This section reads the record's references and adds cited findings from outside it. It needs an account. Everything above is held facts and is complete without it.
What would change this brief held, dated
- CISA KEV
- Not listed in the catalogue we hold. A listing changes this brief.
- exploit probability
- 0.01 on 2026-09-06 (FIRST's EPSS, a probability and not evidence of exploitation). Next band line: 10% (0.10). Crossing a line changes this brief.
- fix
- Held: simatic wincc runtime 15.1; simatic hmi comfort outdoor panels firmware 15.1; simatic hmi comfort panels firmware 15.1; simatic hmi ktp mobile panels ktp400f firmware 15.1…. A newer fix from the CNA or OSV changes this brief.
How to check this
Every value above is held with two dates: when it was true upstream (as_of) and when we recorded it (tx_from). Re-derive the exploit probability as it stood on any date:
SELECT value, source, source_version, as_of, tx_from
FROM volatile_valid_as_of('CVE-2019-6577', '2026-10-31T23:59:59.999999Z', now());