CVE-2025-4082

Modification 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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
mozillaCNA
---
---
CISA-ADPADP
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVEADP
---
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Base Score
CVSS 3.x
EPSS Score
Percentile: 14%
VendorProductVersion
mozillafirefox
𝑥
< 115.23
mozillafirefox
𝑥
< 138.0
mozillafirefox
128.0 ≤
𝑥
< 128.10
mozillathunderbird
𝑥
< 128.10.0
mozillathunderbird
𝑥
< 138.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
145.0.1-1
fixed
firefox-esr
bullseye
115.14.0esr-1~deb11u1
fixed
bullseye (security)
140.5.0esr-1~deb11u1
fixed
bookworm
128.14.0esr-1~deb12u1
fixed
bookworm (security)
140.5.0esr-1~deb12u1
fixed
trixie
140.4.0esr-1~deb13u1
fixed
trixie (security)
140.5.0esr-1~deb13u1
fixed
forky
140.5.0esr-1
fixed
sid
140.5.0esr-1
fixed
thunderbird
bullseye
1:115.12.0-1~deb11u1
fixed
bullseye (security)
1:140.5.0esr-1~deb11u1
fixed
bookworm
1:128.14.0esr-1~deb12u1
fixed
bookworm (security)
1:140.5.0esr-1~deb12u1
fixed
trixie
1:140.4.0esr-1~deb13u1
fixed
trixie (security)
1:140.5.0esr-1~deb13u1
fixed
forky
1:140.5.0esr-1
fixed
sid
1:140.5.0esr-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox
plucky
not-affected
oracular
not-affected
noble
not-affected
jammy
not-affected
focal
dne
thunderbird
plucky
not-affected
oracular
not-affected
noble
not-affected
jammy
not-affected
focal
dne
Common Weakness Enumeration
References
https://bugzilla.mozilla.org/show_bug.cgi?id=1937097
https://www.mozilla.org/security/advisories/mfsa2025-28/
https://www.mozilla.org/security/advisories/mfsa2025-29/
https://www.mozilla.org/security/advisories/mfsa2025-30/
https://www.mozilla.org/security/advisories/mfsa2025-31/
https://www.mozilla.org/security/advisories/mfsa2025-32/
https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html