CVE-2025-10537

Memory safety bugs present in Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
mozillaCNA
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CISA-ADPADP
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 (security)
vulnerable
trixie
vulnerable
forky
vulnerable
sid
vulnerable
thunderbird
bullseye
vulnerable
bullseye (security)
vulnerable
bookworm
vulnerable
bookworm (security)
vulnerable
trixie (security)
vulnerable
trixie
vulnerable
forky
vulnerable
sid
vulnerable
Common Weakness Enumeration
References
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1938220%2C1980730%2C1981280%2C1981283%2C1984505%2C1985067
https://www.mozilla.org/security/advisories/mfsa2025-73/
https://www.mozilla.org/security/advisories/mfsa2025-75/
https://www.mozilla.org/security/advisories/mfsa2025-77/
https://www.mozilla.org/security/advisories/mfsa2025-78/