Samba vulnerabilities: known CVEs & security history
Samba · Actively exploited · 6 tracked CVEs · 0 actively exploited · updated August 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Samba release lines — 6 in total. A CVE here doesn't mean your version is affected — check Samba's current status and the safe version to run.
Known Samba CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2026-4408 | critical | 9 | 3% | 2026 |
| CVE-2026-4480 | critical | 9 | 13% | 2026 |
| CVE-2026-3012 | high | 8 | 0% | 2026 |
| CVE-2026-1933 | high | 7.1 | 1% | 2026 |
| CVE-2026-2340 | medium | 6.5 | 1% | 2026 |
| CVE-2025-0620 | medium | 4.9 | 1% | 2025 |
Is my Samba 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 Samba version → · Monitor Samba for new CVEs →
Samba vulnerabilities — frequently asked
How many known vulnerabilities does Samba have?
IsItPatched tracks 6 CVEs for Samba. 2 are critical-severity and 2 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Samba have any actively-exploited vulnerabilities?
None of Samba'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 Samba vulnerability?
Among tracked issues, CVE-2026-4408 (CRITICAL, CVSS 9) ranks highest — a OS command injection weakness.
Is Samba safe to use?
It depends on the version. The latest supported Samba 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: Samba security status · Samba end-of-life · actively-exploited CVEs. Always verify against Samba's advisories — see our disclaimer.