CVE-2026-5732 - Vulnerability Analysis

Overview

Firefox < 149.0.2 and Firefox ESR < 140.9.1 contain an integer overflow caused by incorrect boundary conditions in the Graphics: Text component, letting attackers potentially cause memory corruption or unexpected behavior, exploit requires crafted input.

Severity & Score

Impact

Attackers can cause memory corruption or unexpected behavior, potentially leading to crashes or code execution.

Mitigation

Update to Firefox 149.0.2, Firefox ESR 140.9.1 or later.

References

• https://www.mozilla.org/security/advisories/mfsa2026-28/
• https://www.mozilla.org/security/advisories/mfsa2026-29/
• 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/

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner