AUGUST 21, 2026
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Case File

CVE-2026-74979

CRITICAL · CVSS 9.8 EPSS 0.35%

Source: NVD + CISA KEV + EPSS · Published 2026-08-18 · Last synced 2026-08-21

CyberRota Analysis

AI-Generated

The Add-ons Manager component in Firefox is vulnerable to a mitigation bypass, potentially allowing unauthorized actions or access within the browser. Users of affected versions should prioritize updating to Firefox 154 or Firefox ESR 153.1 to ensure protection against this issue. Organizations relying on Firefox for secure browsing should take immediate action to mitigate any risks associated with this vulnerability.

CVE
CVE-2026-74979
Severity
CRITICAL
CVSS
9.8
EPSS
0.35%
Firefox

Original NVD Description

Mitigation bypass in the Add-ons Manager component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-75874 CRITICAL CVE-2026-74990 CRITICAL CVE-2026-74989 CRITICAL CVE-2026-74988 CRITICAL CVE-2026-74987 CRITICAL CVE-2026-74983 HIGH