CVE-2026-2781 - Vulnerability Analysis

Overview

NSS in Firefox < 148 and Firefox ESR < 140.8 contains an integer overflow caused by improper handling in the Libraries component, letting attackers potentially cause memory corruption, exploit requires crafted input.

Severity & Score

Impact

Attackers can cause memory corruption, potentially leading to denial of service or code execution.

Mitigation

Update to Firefox 148, Firefox ESR 140.8 or later.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2009552
• https://www.mozilla.org/security/advisories/mfsa2026-13/
• https://www.mozilla.org/security/advisories/mfsa2026-15/
• https://www.mozilla.org/security/advisories/mfsa2026-16/
• https://www.mozilla.org/security/advisories/mfsa2026-17/

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner