Sandbox escape due to use-after-free in the DOM: Content Processes 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.
CVSS Details
- CVSS 3.1 Base Score: 9.6
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade firefox-esr | Oct 1, 2026 | Sep 29, 2026 |
| Mfsa2026 100 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 153.4 | 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 the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 115.42 | Sep 29, 2026 | Sep 29, 2026 |
| Mfsa2026 99 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 140.17 | 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 |
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