Is Mozilla Firefox 155.0 patched?
Summary iPlain-English security status for Mozilla Firefox 155.0, built from its CVEs, active-exploitation data, end-of-life date and latest release.
Mozilla Firefox 155.0 is part of the 155.0 release line. No known vulnerabilities affect it in our data. The latest supported Mozilla Firefox release is 155.0.
Known issues affecting 155.0
None found for this version. ✓
Other Mozilla Firefox versions
Check another release line of Mozilla Firefox.
Frequently asked
Is Mozilla Firefox 155.0 patched?
Mozilla Firefox 155.0 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 155.0.
Is Mozilla Firefox 155.0 still receiving security updates?
Yes — the 155.0 line is still supported and receiving security updates.
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 ↗