Vulnerability · NVD
CVE-2026-21243
HIGH 7.5
Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability
EPSS
0.09%
exploit very unlikely
percentile 25.5%
OS versions that fix this CVE
This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.
- Windows Fixed in Windows Server 2025 (Server Core installation) 10.0.26100.32370 Windows Server 2025 10.0.26100.32370 Windows Server 2022 (Server Core installation) 10.0.20348.4773 Windows Server 2022 10.0.25398.2149 Windows Server 2019 (Server Core installation) 10.0.17763.8389 Windows Server 2019 10.0.17763.8389