CVE-2025-10532

NameCVE-2025-10532
DescriptionThis vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-4305-1, DLA-4311-1, DSA-6003-1, DSA-6011-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid143.0.3-1fixed
firefox-esr (PTS)bullseye115.14.0esr-1~deb11u1vulnerable
bullseye (security)140.3.1esr-1~deb11u1fixed
bookworm128.14.0esr-1~deb12u1vulnerable
bookworm (security)140.3.1esr-1~deb12u1fixed
trixie128.14.0esr-1~deb13u1vulnerable
trixie (security)140.3.1esr-1~deb13u1fixed
forky, sid140.3.1esr-2fixed
thunderbird (PTS)bullseye1:115.12.0-1~deb11u1vulnerable
bullseye (security)1:140.3.0esr-1~deb11u1fixed
bookworm1:128.14.0esr-1~deb12u1vulnerable
bookworm (security)1:140.3.0esr-1~deb12u1fixed
trixie1:128.14.0esr-1~deb13u1vulnerable
trixie (security)1:140.3.0esr-1~deb13u1fixed
forky1:140.3.0esr-1fixed
sid1:140.3.1esr-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)143.0-1
firefox-esrsourcebullseye140.3.0esr-1~deb11u2DLA-4305-1
firefox-esrsourcebookworm140.3.0esr-1~deb12u1DSA-6003-1
firefox-esrsourcetrixie140.3.0esr-1~deb13u1DSA-6003-1
firefox-esrsource(unstable)140.3.0esr-1
thunderbirdsourcebullseye1:140.3.0esr-1~deb11u1DLA-4311-1
thunderbirdsourcebookworm1:140.3.0esr-1~deb12u1DSA-6011-1
thunderbirdsourcetrixie1:140.3.0esr-1~deb13u1DSA-6011-1
thunderbirdsource(unstable)1:140.3.0esr-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2025-73/#CVE-2025-10532
https://www.mozilla.org/en-US/security/advisories/mfsa2025-75/#CVE-2025-10532
https://www.mozilla.org/en-US/security/advisories/mfsa2025-78/#CVE-2025-10532

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