Is Mozilla Firefox 121.0.1 patched?
Mozilla · cycle 121.0 · Official site ↗
121.0.1100/100Healthy
Health score100/100
Open issues0
Exploited now0
Cycle 121.0 EOL—
Latest release152.0
Summary iPlain-English security status for Mozilla Firefox 121.0.1, built from its CVEs, active-exploitation data, end-of-life date and latest release.
Mozilla Firefox 121.0.1 is part of the 121.0 release line. No known vulnerabilities affect it in our data. The latest supported Mozilla Firefox release is 152.0.
Known issues affecting 121.0.1
None found for this version. ✓
Other Mozilla Firefox versions
Check another release line of Mozilla Firefox.
Mozilla Firefox 152.0Mozilla Firefox 151.0.4Mozilla Firefox 150.0.3Mozilla Firefox 149.0.2Mozilla 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 140.12.0Mozilla 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 120.0.1Mozilla Firefox 119.0.1Mozilla Firefox 118.0.2Mozilla Firefox 117.0.1Mozilla Firefox 116.0.3Mozilla Firefox 115.37.0Mozilla 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 121.0.1 patched?
Mozilla Firefox 121.0.1 is on the latest patch of its cycle with no known affecting vulnerabilities.
What is the latest version of Mozilla Firefox?
The latest supported Mozilla Firefox release is 152.0.
Is Mozilla Firefox 121.0.1 still receiving security updates?
Yes — the 121.0 line is still supported and receiving security updates. The latest release is 152.0.
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 ↗