Samba: 4.16.11 → 4.21.0
Samba · upgrade impact
Upgrade impact: Minor upgrade. Minor releases are usually backwards-compatible, but can add or change behaviour — test in staging before production.
Fixed by upgrading to 4.21.0 iVulnerabilities that affect 4.16.11 but no longer affect 4.21.0 — the security gain from this upgrade, by exploited status then exploitation probability.
Exploited first, then by exploitation probability (EPSS).
CVE-2023-3961 CRITICAL EPSS 3% ✓ cleared in 4.21.0 CVE-2026-4408 CRITICAL EPSS 3% ✓ cleared in 4.21.0 CVE-2023-5568 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2023-42669 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2022-32743 HIGH EPSS 2% ✓ cleared in 4.21.0 CVE-2023-4154 HIGH EPSS 1% ✓ cleared in 4.21.0 CVE-2023-4091 MEDIUM EPSS 1% ✓ cleared in 4.21.0 CVE-2023-42670 MEDIUM EPSS 1% ✓ cleared in 4.21.0 CVE-2018-14628 MEDIUM EPSS 1% ✓ cleared in 4.21.0 CVE-2022-1615 MEDIUM EPSS 1% ✓ cleared in 4.21.0 CVE-2026-3012 HIGH EPSS 0% ✓ cleared in 4.21.0Still open in 4.21.0 iKnown vulnerabilities that affect 4.21.0 too — upgrading to it does not clear these.
These affect 4.21.0 as well — a later release may be needed.
CVE-2026-2340 MEDIUM EPSS 1% → see advisory CVE-2025-0620 MEDIUM EPSS 1% → fixed in 4.22.2