CVE-2025-0243

EUVD-2025-1575
Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. 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 < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.1 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CISA-ADPADP
5.1 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 8%
Affected Products (NVD)
VendorProductVersion
mozillafirefox
𝑥
< 128.6.0
mozillafirefox
𝑥
< 133.0
mozillathunderbird
𝑥
< 128.6.0
mozillathunderbird
129.0 ≤
𝑥
< 134.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
148.0-1
fixed
firefox-esr
bookworm
128.14.0esr-1~deb12u1
fixed
bookworm (security)
140.8.0esr-1~deb12u1
fixed
bullseye
vulnerable
bullseye (security)
140.8.0esr-1~deb11u1
fixed
forky
140.8.0esr-1
fixed
sid
140.8.0esr-1
fixed
trixie
140.4.0esr-1~deb13u1
fixed
trixie (security)
140.8.0esr-1~deb13u1
fixed
thunderbird
bookworm
1:140.6.0esr-1~deb12u1
fixed
bookworm (security)
1:140.8.0esr-1~deb12u1
fixed
bullseye
vulnerable
bullseye (security)
1:140.8.0esr-1~deb11u1
fixed
forky
1:140.8.0esr-1
fixed
sid
1:140.8.0esr-1
fixed
trixie
1:140.6.0esr-1~deb13u1
fixed
trixie (security)
1:140.8.0esr-1~deb13u1
fixed
Common Weakness Enumeration
References
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1827142%2C1932783
https://www.mozilla.org/security/advisories/mfsa2025-01/
https://www.mozilla.org/security/advisories/mfsa2025-02/
https://www.mozilla.org/security/advisories/mfsa2025-04/
https://www.mozilla.org/security/advisories/mfsa2025-05/
https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html