Windows Server ↗
Microsoft
85/100 Good
Summary iPlain-English security verdict for Windows Server, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Windows Server currently scores 85/100 — good. No tracked vulnerabilities are currently known to be exploited in the wild. The latest supported release is 10.0.26100. It's largely safe; apply minor updates as they appear. Note: this product is assessed at the product level on recent (365-day) activity rather than an exact per-version match, so it is never marked a confident "healthy".
Disclosure trend iNew CVEs published for Windows Server each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
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Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2022-21907 CRITICAL EPSS 92% → see advisory CVE-2017-11870 HIGH Memory corruption EPSS 80% → see advisory CVE-2017-11861 HIGH Memory corruption EPSS 76% → see advisory CVE-2017-11873 HIGH Memory corruption EPSS 76% → see advisory CVE-2022-26937 CRITICAL EPSS 71% → see advisory CVE-2009-1133 HIGH Memory corruption EPSS 67% → see advisory CVE-2009-0568 HIGH CWE-264 EPSS 56% → see advisory CVE-2018-8420 HIGH XML external entity (XXE) EPSS 53% → see advisory CVE-2018-8421 CRITICAL Improper input validation EPSS 53% → see advisory CVE-2022-21972 HIGH EPSS 49% → see advisory CVE-2022-23270 HIGH EPSS 48% → see advisory CVE-2018-8332 HIGH EPSS 36% → see advisoryVersions & lifecycle iWhen each release line stops receiving security patches (end-of-life). After EOL there are no more fixes — plan upgrades before these dates.
How long each Windows Server release line is supported — and when it sunsets.
2025 latest 10.0.26100 Supported until 2034-10-10
23h2-ac latest 10.0.25398 End of life ended 2025-10-24
2022 latest 10.0.20348 Supported until 2031-10-14
20h2-sac latest 10.0.19042 End of life ended 2022-08-09
2004-sac latest 10.0.19041 End of life ended 2021-12-14
1909-sac latest 10.0.18363 End of life ended 2021-05-11
1903-sac latest 10.0.18362 End of life ended 2020-12-08
1809-sac latest 10.0.17763 End of life ended 2020-11-10
2019 latest 10.0.17763 Supported until 2029-01-09
1803-sac latest 10.0.17134 End of life ended 2019-11-12
See all upcoming end-of-life dates → ℹ product-level posture (last 365d); exact per-version verdict pending precise version mapping