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Privilege escalation due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade firefox | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade firefox-debugsourceUpgrade firefox-debuginfoUpgrade firefox | Oct 13, 2026 | Sep 29, 2026 |
| Debian | — | Upgrade thunderbirdUpgrade firefox-esr | Oct 1, 2026 | Sep 29, 2026 |
| Mfsa2026 100 | — | Upgrade to Mozilla Firefox ESR version 153.4Upgrade to the latest version of Mozilla Firefox | Sep 29, 2026 | Sep 29, 2026 |
| Mfsa2026 97 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 157.0 | Sep 29, 2026 | Sep 29, 2026 |
| Mfsa2026 98 | — | Upgrade to Mozilla Firefox ESR version 115.42Upgrade to the latest version of Mozilla Firefox | Sep 29, 2026 | Sep 29, 2026 |
| Mfsa2026 99 | — | Upgrade to Mozilla Firefox ESR version 140.17Upgrade to the latest version of Mozilla Firefox | Sep 29, 2026 | Sep 29, 2026 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 153.4 | Sep 30, 2026 | Sep 30, 2026 |
| Oracle_linux | — | Upgrade thunderbirdUpgrade firefoxUpgrade firefox-x11 | Oct 22, 2026 | Sep 29, 2026 |
| Redhat_linux | — | No solution exists | Oct 19, 2026 | Sep 29, 2026 |
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