CVE-2026-5732

HIGH

8.8

Description

Incorrect boundary conditions, integer overflow in the Graphics: Text component. This vulnerability affects Firefox < 149.0.2, Firefox ESR < 140.9.1, Thunderbird < 149.0.2, and Thunderbird < 140.9.1.

CVE Details

CVSS v3.1 Score8.8

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published4/7/2026

Last Modified4/7/2026

Sourcenvd

Honeypot Sightings0

Affected Products

mozilla:firefox

Weaknesses (CWE)

CWE-190

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2017867(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2026-25/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2026-27/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2026-28/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2026-29/(security@mozilla.org)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.