# Windows 11 25H2 vulnerabilities > Windows 11 25H2 is made by Microsoft. We track 108 published vulnerabilities in it, across 5 versions. 4 of them are on the list of flaws known to be exploited, the newest added on 8 September 2026. If you run Windows 11 25H2, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/microsoft/windows_11_25h2 ## At a glance - **Made by:** [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) - **Published vulnerabilities:** 108 - **Known to be exploited:** 4 - **Versions tracked:** 5 - **Most recently added to the known-exploited list:** [CVE-2026-81963](https://www.precursorintelligence.com/what-is/cve-2026-81963), 8 September 2026. We keep watching the list. ## Which versions of Windows 11 25H2 do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "before 10.0.26200.9445" means every version up to, but not including, 10.0.26200.9445. - [CVE-2026-81963](https://www.precursorintelligence.com/what-is/cve-2026-81963) (Microsoft Windows Link Following Vulnerability): before 10.0.26200.9445 - [CVE-2025-24990](https://www.precursorintelligence.com/what-is/cve-2025-24990) (Microsoft Windows Untrusted Pointer Dereference Vulnerability): before 10.0.26200.6899 - [CVE-2025-47827](https://www.precursorintelligence.com/what-is/cve-2025-47827) (IGEL OS Use of a Key Past its Expiration Date Vulnerability): before 10.0.26200.6899 - [CVE-2025-59230](https://www.precursorintelligence.com/what-is/cve-2025-59230) (Microsoft Windows Improper Access Control Vulnerability): before 10.0.26200.6899 ## Which Windows 11 25H2 vulnerabilities are being exploited? 4 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2026-81963](https://www.precursorintelligence.com/what-is/cve-2026-81963): Microsoft Windows Link Following Vulnerability. High, CVSS 7.8, chance of use in 30 days 0.4%, known exploited since 8 September 2026. - [CVE-2025-24990](https://www.precursorintelligence.com/what-is/cve-2025-24990): Microsoft Windows Untrusted Pointer Dereference Vulnerability. High, CVSS 7.8, chance of use in 30 days 6.4%, known exploited since 14 October 2025. - [CVE-2025-47827](https://www.precursorintelligence.com/what-is/cve-2025-47827): IGEL OS Use of a Key Past its Expiration Date Vulnerability. Medium, CVSS 4.6, chance of use in 30 days 4.9%, known exploited since 14 October 2025. - [CVE-2025-59230](https://www.precursorintelligence.com/what-is/cve-2025-59230): Microsoft Windows Improper Access Control Vulnerability. High, CVSS 7.8, chance of use in 30 days 2.7%, known exploited since 14 October 2025. ## Which Windows 11 25H2 flaws are most likely to be used? Ranked by the latest exploit-likelihood forecast (the chance each flaw is used in an attack in the next 30 days): - [CVE-2025-24990](https://www.precursorintelligence.com/what-is/cve-2025-24990): 6.4%, High (CVSS 7.8), known exploited - [CVE-2025-55681](https://www.precursorintelligence.com/what-is/cve-2025-55681): 5.4%, High (CVSS 7.0) - [CVE-2025-47827](https://www.precursorintelligence.com/what-is/cve-2025-47827): 4.9%, Medium (CVSS 4.6), known exploited - [CVE-2025-59199](https://www.precursorintelligence.com/what-is/cve-2025-59199): 4.2%, High (CVSS 7.8) - [CVE-2025-55692](https://www.precursorintelligence.com/what-is/cve-2025-55692): 3.4%, High (CVSS 7.8) - [CVE-2025-55338](https://www.precursorintelligence.com/what-is/cve-2025-55338): 3.1%, Medium (CVSS 6.1) - [CVE-2025-55694](https://www.precursorintelligence.com/what-is/cve-2025-55694): 3.0%, High (CVSS 7.8) - [CVE-2025-59194](https://www.precursorintelligence.com/what-is/cve-2025-59194): 2.7%, High (CVSS 7.0) - [CVE-2025-59230](https://www.precursorintelligence.com/what-is/cve-2025-59230): 2.7%, High (CVSS 7.8), known exploited - [CVE-2025-24052](https://www.precursorintelligence.com/what-is/cve-2025-24052): 2.5%, High (CVSS 7.8) ## Questions ### How many vulnerabilities does Windows 11 25H2 have? We track 108 published vulnerabilities listed under the name Windows 11 25H2, across 5 versions. The most recent Windows 11 25H2 flaw added to the known-exploited list is CVE-2026-81963, on 8 September 2026. ### Which Windows 11 25H2 vulnerabilities are being exploited? 4 are on the list of flaws known to be exploited. The most recently added are CVE-2026-81963, CVE-2025-24990 and CVE-2025-47827. ### Which versions of Windows 11 25H2 do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2026-81963, affects before 10.0.26200.9445. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Windows 11 25H2? Create a Precursor Intelligence account and track Windows 11 25H2. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook. ## Running Windows 11 25H2? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact