CVE Vulnerabilities

CVE-2026-21243

NULL Pointer Dereference

Published: Feb 10, 2026 | Modified: Feb 11, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu
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Null pointer dereference in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network.

Weakness

The product dereferences a pointer that it expects to be valid but is NULL.

Affected Software

NameVendorStart VersionEnd Version
Windows_server_2019Microsoft*10.0.17763.8389 (excluding)
Windows_server_2022Microsoft*10.0.20348.4711 (excluding)
Windows_server_2022_23h2Microsoft*10.0.25398.2149 (excluding)
Windows_server_2025Microsoft*10.0.26100.32313 (excluding)

Potential Mitigations

References