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Incorrect boundary conditions in the JavaScript Engine component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Mfsa2026 118 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox version 159.0 | Oct 27, 2026 | Oct 27, 2026 |
| Mfsa2026 119 | — | Upgrade to Mozilla Firefox ESR version 115.44Upgrade to the latest version of Mozilla Firefox | Oct 27, 2026 | Oct 27, 2026 |
| Mfsa2026 120 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 153.6 | Oct 27, 2026 | Oct 27, 2026 |
| Mozilla Thunderbird | — | Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 153.6 | Oct 27, 2026 | Oct 27, 2026 |
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