CVE-2026-5732

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.

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-25)

CWE

CWE-190

Published

2026-04-07

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

Affected

• mozilla:firefox

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2017867
• https://www.mozilla.org/security/advisories/mfsa2026-25/
• https://www.mozilla.org/security/advisories/mfsa2026-27/
• https://www.mozilla.org/security/advisories/mfsa2026-28/
• https://www.mozilla.org/security/advisories/mfsa2026-29/

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