CVE-2025-4082

NameCVE-2025-4082
DescriptionModification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges. *This bug only affects Thunderbird for macOS. Other versions of Thunderbird are unaffected.* This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid138.0.1-1fixed
firefox-esr (PTS)bullseye115.14.0esr-1~deb11u1fixed
bullseye (security)128.9.0esr-1~deb11u1fixed
bookworm128.8.0esr-1~deb12u1fixed
bookworm (security)128.10.0esr-1~deb12u1fixed
trixie128.9.0esr-2fixed
sid128.10.0esr-1fixed
thunderbird (PTS)bullseye1:115.12.0-1~deb11u1fixed
bullseye (security)1:128.10.0esr-1~deb11u1fixed
bookworm1:128.8.0esr-1~deb12u1fixed
bookworm (security)1:128.10.0esr-1~deb12u1fixed
trixie1:128.9.0esr-1fixed
sid1:128.10.0esr-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)(not affected)
firefox-esrsource(unstable)(not affected)
thunderbirdsource(unstable)(not affected)

Notes

- firefox <not-affected> (Only affects Firefox on MacOS)
- firefox-esr <not-affected> (Only affects Firefox on MacOS)
- thunderbird <not-affected> (Only affects Thunderbird on MacOS)
https://www.mozilla.org/en-US/security/advisories/mfsa2025-28/#CVE-2025-4082
https://www.mozilla.org/en-US/security/advisories/mfsa2025-29/#CVE-2025-4082
https://www.mozilla.org/en-US/security/advisories/mfsa2025-32/#CVE-2025-4082

Search for package or bug name: Reporting problems