CVE-2025-11711

There was a way to change the value of JavaScript Object properties that were supposed to be non-writeable. This vulnerability affects Firefox < 144, Firefox ESR < 115.29, Firefox ESR < 140.4, Thunderbird < 144, and Thunderbird < 140.4.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
UNKNOWN
---
mozillaCNA
---
---
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
vulnerable
firefox-esr
bullseye
vulnerable
bullseye (security)
vulnerable
bookworm
vulnerable
bookworm (security)
vulnerable
trixie
vulnerable
trixie (security)
vulnerable
forky
vulnerable
sid
vulnerable
thunderbird
bullseye
vulnerable
bullseye (security)
vulnerable
bookworm
vulnerable
bookworm (security)
vulnerable
trixie
vulnerable
trixie (security)
vulnerable
forky
vulnerable
sid
vulnerable
Vulnerability Media Exposure
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1989978
https://www.mozilla.org/security/advisories/mfsa2025-81/
https://www.mozilla.org/security/advisories/mfsa2025-82/
https://www.mozilla.org/security/advisories/mfsa2025-83/
https://www.mozilla.org/security/advisories/mfsa2025-84/
https://www.mozilla.org/security/advisories/mfsa2025-85/