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CVE-2025-11716: Sandboxed iframes allowed links to open in external apps (Android only)

ROUTINE

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

  1. Upgrade to the fixed version for your release line, or later: firefox 144.0; thunderbird 144.0 upper bounds of the CVE record's affected ranges
  2. 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
  3. Check your version against the ranges this record publishes.

What it is stated by the CNA

Links in a sandboxed iframe could open an external app on Android without the required "allow-" permission. This vulnerability was fixed in Firefox 144 and Thunderbird 144.

weakness
Not named by the CNA. NVD maps it to CWE-284.
affected
Mozilla Firefox; Mozilla Thunderbird
published ranges
mozilla firefox < 144.0; mozilla thunderbird < 144.0
first unaffected version, by branch
firefox 144.0; thunderbird 144.0
assigned by
mozilla
published
2025-10-14

check us bugzilla.mozilla.org mozilla.org mozilla.org

Exploit code held, dated

exploit code
None held in the PoC-in-GitHub feed. A public repository changes this brief.

What moved held, dated

dateEPSSevent
15 Oct 20250.00017
16 Oct 20250.00026
20 Oct 20250.00028
15 Nov 20250.00031
21 Dec 20250.00035
13 Feb 20260.00047
12 Mar 20260.00025
13 Mar 20260.00024
24 Mar 20260.00028
10 May 20260.0003
20 May 20260.00029
15 Jun 20260.00214scoring model v2026.06.15
10 Jul 20260.00219
14 Sep 20260.00235

14 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.

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What would change this brief held, dated

CISA KEV
Not listed in the catalogue we hold. A listing changes this brief.
exploit probability
0.00 on 2026-09-14 (FIRST's EPSS, a probability and not evidence of exploitation). Next band line: 10% (0.10). Crossing a line changes this brief.
fix
Held: firefox 144.0; thunderbird 144.0. A newer fix from the CNA or OSV changes this brief.

Watch this CVE What counts as a move

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-2025-11716', '2026-10-31T23:59:59.999999Z', now());