CVE-2026-2780 - Vulnerability Analysis

Overview

Firefox < 148 and Firefox ESR < 140.8 contain a privilege escalation caused by a vulnerability in the Netmonitor component, letting attackers escalate privileges, exploit requires no special conditions.

Severity & Score

Impact

Attackers can escalate their privileges, potentially gaining unauthorized access or control.

Mitigation

Update to Firefox 148 and Firefox ESR 140.8 or later.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2007829
• 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