Windows Server 2025 ↗
Summary iPlain-English security verdict for Windows Server 2025, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Windows Server 2025 currently scores 0/100 — critical, with active exploitation. 37 of its known vulnerabilities are being actively exploited in the wild (CISA KEV), including CVE-2024-43451. The latest supported release is 10.0.26100. Upgrade immediately and review your exposure to the actively-exploited CVEs below. 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 2025 each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
⚠ 3 of its known vulnerabilities are linked to ransomware campaigns (CISA KEV).
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-2024-43451 MEDIUM ● exploited CWE-73 EPSS 90% → fixed in 10.0.26100.2314 CVE-2024-49138 HIGH ● exploited CWE-122 EPSS 87% → fixed in 10.0.26100.2605 CVE-2025-21333 HIGH ● exploited CWE-122 EPSS 79% → fixed in 10.0.26100.2894 CVE-2013-3900 MEDIUM ● exploited CWE-347 EPSS 76% → see advisory CVE-2025-59287 CRITICAL ● exploited Insecure deserialization EPSS 69% → fixed in 10.0.26100.6905 CVE-2024-49039 HIGH ● exploited ⚠ ransomware Improper authentication EPSS 65% → fixed in 10.0.26100.2314 CVE-2026-32202 MEDIUM ● exploited CWE-693 EPSS 53% → fixed in 10.0.26100.32690 CVE-2025-33053 HIGH ● exploited CWE-73 EPSS 50% → fixed in 10.0.26100.4270 CVE-2025-26633 HIGH ● exploited ⚠ ransomware CWE-707 EPSS 47% → fixed in 10.0.26100.3403 CVE-2025-33073 HIGH ● exploited Improper access control EPSS 44% → fixed in 10.0.26100.4270 CVE-2026-21513 HIGH ● exploited CWE-693 EPSS 28% → fixed in 10.0.26100.32313 CVE-2025-30397 HIGH ● exploited CWE-843 EPSS 21% → fixed in 10.0.26100.3981Versions & 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 2025 release line is supported — and when it sunsets.
ℹ product-level posture (last 365d); exact per-version verdict pending precise version mapping