Cisco Firepower Threat Defense vulnerabilities: known CVEs & security history

Cisco · Network security · 222 tracked CVEs · 10 actively exploited · updated June 2026 · what is a CVE? →

This is the full list of known vulnerabilities (CVEs) across all Cisco Firepower Threat Defense release lines — 222 in total, with 10 actively exploited in the wild. A CVE here doesn't mean your version is affected — check Cisco Firepower Threat Defense's current status and the safe version to run.

Known Cisco Firepower Threat Defense CVEs

Actively-exploited and most-severe first. Showing the top 80 of 222. Open any CVE for full details.

142 older / lower-severity CVEs not shown — see Cisco Firepower Threat Defense's full record.

Is my Cisco Firepower Threat Defense version affected?

The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.

Check your Cisco Firepower Threat Defense version → · Monitor Cisco Firepower Threat Defense for new CVEs →

Cisco Firepower Threat Defense vulnerabilities — frequently asked

CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: Cisco Firepower Threat Defense security status · Cisco Firepower Threat Defense end-of-life · actively-exploited CVEs. Always verify against Cisco's advisories — see our disclaimer.