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.
The product reads data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1937097 | permissions required |
| https://www.mozilla.org/security/advisories/mfsa2025-28/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-29/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-30/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-31/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-32/ | vendor advisory |