CVE-2025-4082mediumCWE-125

WebGL shader attribute memory corruption in Thunderbird for macOS

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.9epss 0.4%

exploitation probability

0.4%top 63% of all CVEs

observed exploitation

nono source reports it

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 was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Mozilla · Firefox Mozilla · Thunderbird

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1937097 https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html 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/