Samba: 4.4.16 → 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 4.4.16 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-2020-1472 MEDIUM exploited ransomware EPSS 99% ✓ cleared in 4.21.0 CVE-2021-44142 HIGH EPSS 74% ✓ cleared in 4.21.0 CVE-2023-34966 HIGH EPSS 62% ✓ cleared in 4.21.0 CVE-2023-34967 MEDIUM EPSS 61% ✓ cleared in 4.21.0 CVE-2017-15275 HIGH EPSS 21% ✓ cleared in 4.21.0 CVE-2020-17049 MEDIUM EPSS 14% ✓ cleared in 4.21.0 CVE-2018-1057 HIGH EPSS 10% ✓ cleared in 4.21.0 CVE-2017-14746 CRITICAL EPSS 10% ✓ cleared in 4.21.0 CVE-2022-42898 HIGH EPSS 7% ✓ cleared in 4.21.0 CVE-2018-1050 MEDIUM EPSS 7% ✓ cleared in 4.21.0 CVE-2018-14629 MEDIUM EPSS 5% ✓ cleared in 4.21.0 CVE-2018-16841 MEDIUM EPSS 5% ✓ cleared in 4.21.0 CVE-2021-20277 HIGH EPSS 4% ✓ cleared in 4.21.0 CVE-2018-10858 MEDIUM EPSS 4% ✓ cleared in 4.21.0 CVE-2022-37967 HIGH EPSS 4% ✓ cleared in 4.21.0 CVE-2020-10745 HIGH EPSS 4% ✓ cleared in 4.21.0 CVE-2022-3437 MEDIUM EPSS 4% ✓ cleared in 4.21.0 CVE-2020-27840 HIGH EPSS 4% ✓ cleared in 4.21.0 CVE-2020-10704 HIGH EPSS 4% ✓ cleared in 4.21.0 CVE-2019-10218 MEDIUM EPSS 3% ✓ cleared in 4.21.0 CVE-2018-16851 MEDIUM EPSS 3% ✓ cleared in 4.21.0 CVE-2019-3880 MEDIUM EPSS 3% ✓ cleared in 4.21.0 CVE-2019-3824 MEDIUM EPSS 3% ✓ cleared in 4.21.0 CVE-2023-3961 CRITICAL EPSS 3% ✓ cleared in 4.21.0 CVE-2019-14870 MEDIUM EPSS 3% ✓ cleared in 4.21.0 CVE-2022-37966 HIGH EPSS 3% ✓ cleared in 4.21.0 CVE-2026-4408 CRITICAL EPSS 3% ✓ cleared in 4.21.0 CVE-2022-38023 HIGH EPSS 2% ✓ cleared in 4.21.0 CVE-2021-3670 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2019-14861 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2020-14383 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2018-10919 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2021-3671 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2019-14847 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2023-5568 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2021-3738 HIGH EPSS 2% ✓ cleared in 4.21.0 CVE-2023-42669 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2016-2124 MEDIUM EPSS 2% ✓ cleared in 4.21.0 CVE-2022-0336 HIGH EPSS 2% ✓ cleared in 4.21.0 CVE-2020-25718 HIGH EPSS 2% ✓ 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