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7.0
Windows Authentication Methods Privilege Elevation Vulnerability
CVE-2026-25171
Summary
A vulnerability in Windows Authentication Methods allows an authorized user to potentially gain elevated privileges on a local machine. This could be exploited by an attacker with legitimate access to the system, posing a risk to the security of sensitive data and system settings. Affected systems should be patched or updated as soon as possible to prevent potential unauthorized access.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| microsoft | windows_10_1607 | <= 10.0.14393.8957 | – |
| microsoft | windows_10_1607 | <= 10.0.14393.8957 | – |
| microsoft | windows_10_1809 | <= 10.0.17763.8511 | – |
| microsoft | windows_10_1809 | <= 10.0.17763.8511 | – |
| microsoft | windows_10_21h2 | <= 10.0.19044.7058 | – |
| microsoft | windows_10_21h2 | <= 10.0.19044.7058 | – |
| microsoft | windows_10_21h2 | <= 10.0.19044.7058 | – |
| microsoft | windows_10_22h2 | <= 10.0.19045.7058 | – |
| microsoft | windows_10_22h2 | <= 10.0.19045.7058 | – |
| microsoft | windows_10_22h2 | <= 10.0.19045.7058 | – |
| microsoft | windows_11_23h2 | <= 10.0.22631.6783 | – |
| microsoft | windows_11_23h2 | <= 10.0.22631.6783 | – |
| microsoft | windows_11_24h2 | <= 10.0.26100.7979 | – |
| microsoft | windows_11_24h2 | <= 10.0.26100.7979 | – |
| microsoft | windows_11_25h2 | <= 10.0.26200.7979 | – |
| microsoft | windows_11_25h2 | <= 10.0.26200.7979 | – |
| microsoft | windows_11_26h1 | <= 10.0.28000.1719 | – |
| microsoft | windows_11_26h1 | <= 10.0.28000.1719 | – |
| microsoft | windows_server_2012 | All versions | – |
| microsoft | windows_server_2012 | r2 | – |
| microsoft | windows_server_2016 | <= 10.0.14393.8957 | – |
| microsoft | windows_server_2019 | <= 10.0.17763.8511 | – |
| microsoft | windows_server_2022 | <= 10.0.20348.4830 | – |
| microsoft | windows_server_2022_23h2 | <= 10.0.25398.2207 | – |
| microsoft | windows_server_2025 | <= 10.0.26100.32463 | – |
Original title
Use after free in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.
Original description
Use after free in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.
nvd CVSS3.1
7.0
Vulnerability type
CWE-416
Use After Free
Published: 10 Mar 2026 · Updated: 14 Mar 2026 · First seen: 11 Mar 2026