CVE-2026-5732
Incorrect boundary conditions, integer overflow in the Graphics: Text component
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability was fixed in Firefox 149.0.2, Firefox ESR 140.9.1, Thunderbird 149.0.2, and Thunderbird 140.9.1.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 7, 2026 |
| 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=2017867 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-25/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-27/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-28/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-29/
Credits
Sajeeb Lohani