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Is Mozilla Firefox 149.0.2 patched?

Mozilla · cycle 149.0 · Official site ↗
149.0.25/100Critical

Current stable (158.0): 100/100

Minimum safe version157.0.1

149.0.2 has 283 open critical-or-high vulnerabilities. Run 157.0.1 or later to clear them. See what 157.0.1 fixes →

Health score5/100
Open issues346
Exploited now0
Cycle 149.0 EOL—
Latest release158.0

Summary iPlain-English security status for Mozilla Firefox 149.0.2, built from its CVEs, active-exploitation data, end-of-life date and latest release.

Mozilla Firefox 149.0.2 is part of the 149.0 release line. 346 known vulnerabilities affect it. The minimum safe version is 157.0.1 — upgrade to it or later to clear the open critical/high issues. The latest supported Mozilla Firefox release is 158.0.

Known issues affecting 149.0.2

Exploited first, then by exploitation probability.

CVE-2026-8956 CRITICAL EPSS 1% → fixed in 151.0.0 CVE-2026-74943 CRITICAL EPSS 1% → fixed in 153.1.0 CVE-2026-8946 HIGH EPSS 1% → fixed in 151.0.0 CVE-2026-8949 HIGH EPSS 1% → fixed in 151.0.0 CVE-2026-92036 CRITICAL EPSS 1% → fixed in 156.0.0 CVE-2026-92037 CRITICAL EPSS 1% → fixed in 156.0.0 CVE-2026-92061 CRITICAL EPSS 1% → fixed in 156.0.0 CVE-2026-92066 CRITICAL EPSS 1% → fixed in 156.0.0 CVE-2026-6746 HIGH EPSS 1% → fixed in 150.0 CVE-2026-92051 CRITICAL EPSS 1% → fixed in 156.0.0 CVE-2026-10702 MEDIUM EPSS 1% → fixed in 151.0.3 CVE-2026-74990 CRITICAL EPSS 1% → fixed in 153.1.0 CVE-2026-74987 CRITICAL EPSS 1% → fixed in 153.1.0 CVE-2026-6785 HIGH EPSS 1% → fixed in 150.0 CVE-2026-6786 HIGH EPSS 0% → fixed in 150.0 CVE-2026-6750 HIGH EPSS 0% → fixed in 150.0 CVE-2026-12328 HIGH EPSS 0% → fixed in 152.0 CVE-2026-8953 CRITICAL EPSS 0% → fixed in 151.0.0 CVE-2026-8948 CRITICAL EPSS 0% → fixed in 151.0.0 CVE-2026-92040 HIGH EPSS 0% → fixed in 156.0.0

Other Mozilla Firefox versions

Check another release line of Mozilla Firefox.

Mozilla Firefox 158.0Mozilla Firefox 157.0.1Mozilla Firefox 156.0.1Mozilla Firefox 155.0.1Mozilla Firefox 154.0.1Mozilla Firefox 153.5.0Mozilla Firefox 152.0.6Mozilla Firefox 151.0.4Mozilla Firefox 150.0.3Mozilla Firefox 148.0.2Mozilla Firefox 147.0.4Mozilla Firefox 146.0.1Mozilla Firefox 145.0.2Mozilla Firefox 144.0.2Mozilla Firefox 143.0.4Mozilla Firefox 142.0.1Mozilla Firefox 141.0.3Mozilla Firefox 140.17.0Mozilla Firefox 139.0.4Mozilla Firefox 138.0.4Mozilla Firefox 137.0.2Mozilla Firefox 136.0.4Mozilla Firefox 135.0.1Mozilla Firefox 134.0.2Mozilla Firefox 133.0.3Mozilla Firefox 132.0.2Mozilla Firefox 131.0.3Mozilla Firefox 130.0.1Mozilla Firefox 129.0.2Mozilla Firefox 128.14.0Mozilla Firefox 127.0.2Mozilla Firefox 126.0.1Mozilla Firefox 125.0.3Mozilla Firefox 124.0.2Mozilla Firefox 123.0.1Mozilla Firefox 122.0.1Mozilla Firefox 121.0.1Mozilla Firefox 120.0.1Mozilla Firefox 119.0.1Mozilla Firefox 118.0.2Mozilla Firefox 117.0.1Mozilla Firefox 116.0.3Mozilla Firefox 115.38.0Mozilla Firefox 114.0.2Mozilla Firefox 113.0.2Mozilla Firefox 112.0.2Mozilla Firefox 111.0.1Mozilla Firefox 110.0.1Mozilla Firefox 109.0.1Mozilla Firefox 108.0.2Mozilla Firefox 107.0.1Mozilla Firefox 106.0.5Mozilla Firefox 105.0.3Mozilla Firefox 104.0.2Mozilla Firefox 103.0.2Mozilla Firefox 102.15.1Mozilla Firefox 91.13.0Mozilla Firefox 78.15.0

Frequently asked

Is Mozilla Firefox 149.0.2 patched?

Mozilla Firefox 149.0.2 has 283 open critical-or-high vulnerabilities. The minimum safe version is 157.0.1 — upgrade to 157.0.1 or later to clear them.

What version should I upgrade Mozilla Firefox 149.0.2 to?

Upgrade Mozilla Firefox 149.0.2 to at least 157.0.1 to clear its 283 open critical-or-high vulnerabilities.

What is the latest version of Mozilla Firefox?

The latest supported Mozilla Firefox release is 158.0.

Is Mozilla Firefox 149.0.2 still receiving security updates?

Yes — the 149.0 line is still supported and receiving security updates. The latest release is 158.0.

Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Mozilla's official advisory before you patch or upgrade — Mozilla Firefox official site ↗