Windows 11 ↗
Summary iPlain-English security verdict for Windows 11, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Windows 11 currently scores 85/100 — good. 1 actively-exploited vulnerability (CISA KEV) affects older releases (e.g. CVE-2021-40449) — staying on the latest supported version keeps you clear of it. The latest supported release is 10.0.28000. 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 11 each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
1 of its known vulnerability is 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-2021-40449 HIGH exploited ransomware Use-after-free EPSS 74% → fixed in 10.0.22000.258 CVE-2022-21907 CRITICAL EPSS 93% → see advisory CVE-2023-21758 HIGH CWE-476 EPSS 93% → see advisory CVE-2022-26809 CRITICAL EPSS 92% → see advisory CVE-2022-30216 HIGH Unrestricted file upload EPSS 88% → see advisory CVE-2022-37958 HIGH EPSS 86% → see advisory CVE-2022-21972 HIGH EPSS 81% → see advisory CVE-2022-34721 CRITICAL EPSS 79% → see advisory CVE-2022-23270 HIGH EPSS 73% → see advisory CVE-2023-21768 HIGH CWE-822 EPSS 65% → see advisory CVE-2022-41076 HIGH EPSS 62% → see advisory CVE-2022-23253 MEDIUM EPSS 56% → see advisoryGet alerted about Windows 11
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Versions & 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 11 release line is supported — and when it sunsets.
Full Windows 11 end-of-life dates & support timeline →
Frequently asked
Is Windows 11 safe and patched?
Windows 11 currently scores 85/100 — good. 1 actively-exploited vulnerability (CISA KEV) affects older releases (e.g. CVE-2021-40449) — staying on the latest supported version keeps you clear of it. The latest supported release is 10.0.28000. 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".
What should I do about Windows 11 now?
Upgrade Windows 11 to the latest supported release (10.0.28000) or later, which clears the actively-exploited issues affecting older versions, then confirm against Microsoft's official advisory.
When does Windows 11 reach end-of-life?
The latest supported Windows 11 release is 10.0.28000. After end-of-life a release no longer receives security patches.
Which versions of Windows 11 are still receiving security updates?
Supported Windows 11 release lines (latest 10.0.28000): 11-26h1-e, 11-26h1-w, 11-25h2-e, 11-25h2-w, 11-24h2-iot-lts, 11-24h2-e-lts, 11-24h2-e, 11-24h2-w. End-of-life releases no longer receive security patches.
product-level posture (last 365d); exact per-version verdict pending precise version mapping
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Microsoft's official advisory before you patch or upgrade — Windows 11 official site ↗