FreeBSD vulnerabilities: known CVEs & security history
FreeBSD · OS / Unix · 20 tracked CVEs · 0 actively exploited · updated August 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all FreeBSD release lines — 20 in total. A CVE here doesn't mean your version is affected — check FreeBSD's current status and the safe version to run.
Known FreeBSD CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2026-39461 | high | 8.8 | 0% | 2026 |
| CVE-2019-5596 | high | 8.8 | 1% | 2019 |
| CVE-2026-45253 | high | 8.4 | 0% | 2026 |
| CVE-2026-49416 | high | 7.8 | 0% | 2026 |
| CVE-2026-49414 | high | 7.8 | 0% | 2026 |
| CVE-2026-49412 | high | 7.8 | 0% | 2026 |
| CVE-2026-45258 | high | 7.8 | 0% | 2026 |
| CVE-2026-45257 | high | 7.8 | 0% | 2026 |
| CVE-2026-45251 | high | 7.8 | 0% | 2026 |
| CVE-2026-45250 | high | 7.8 | 0% | 2026 |
| CVE-2026-45255 | high | 7.5 | 0% | 2026 |
| CVE-2002-0062 | high | 7.2 | 0% | 2002 |
| CVE-2000-0963 | high | 7.2 | 1% | 2000 |
| CVE-2026-49413 | high | 7.1 | 0% | 2026 |
| CVE-2026-49417 | high | 7 | 0% | 2026 |
| CVE-2026-45259 | medium | 6.5 | 0% | 2026 |
| CVE-2026-45254 | medium | 6.5 | 0% | 2026 |
| CVE-2026-45256 | medium | 5.5 | 0% | 2026 |
| CVE-2026-45252 | medium | 5.5 | 0% | 2026 |
| CVE-2019-5595 | medium | 5.5 | 0% | 2019 |
Is my FreeBSD 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 FreeBSD version → · Monitor FreeBSD for new CVEs →
FreeBSD vulnerabilities — frequently asked
How many known vulnerabilities does FreeBSD have?
IsItPatched tracks 20 CVEs for FreeBSD. 0 are critical-severity and 15 high-severity. These span every release line — what matters is whether the version you run is affected.
Does FreeBSD have any actively-exploited vulnerabilities?
None of FreeBSD's tracked CVEs are currently in CISA's KEV catalog — but new ones can be added at any time, so keep your version current.
What is the most severe FreeBSD vulnerability?
Among tracked issues, CVE-2026-39461 (HIGH, CVSS 8.8) ranks highest — a CWE-121 weakness.
Is FreeBSD safe to use?
It depends on the version. The latest supported FreeBSD release clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: FreeBSD security status · FreeBSD end-of-life · actively-exploited CVEs. Always verify against FreeBSD's advisories — see our disclaimer.