CVE-2025-10528
Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component
CVSS Score
7.3
EPSS Score
0.0%
EPSS Percentile
0th
Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 16, 2025 |
| Last Updated | Apr 13, 2026 |
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Affected Versions
Mozilla / Firefox
All versions affected Mozilla / Thunderbird
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=1986185 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-73/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-75/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-77/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2025-78/ lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/09/msg00026.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/09/msg00020.html
Credits
Oskar L