Description
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.
Affected products
mozilla: firefox
References10
- www.mozilla.org/security/advisories/mfsa2026-25/ Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-27/ Vendor Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=2017867 Issue TrackingPermissions Required
- www.mozilla.org/security/advisories/mfsa2026-28/
- www.mozilla.org/security/advisories/mfsa2026-29/
- access.redhat.com/errata/RHSA-2026:11805
- access.redhat.com/errata/RHSA-2026:11813
- access.redhat.com/errata/RHSA-2026:12264
- access.redhat.com/errata/RHSA-2026:13342
- access.redhat.com/errata/RHSA-2026:13412
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 31 · as of 12 November 2026
- CWE
- CWE-190
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