Multiple Windows Denial of Service Vulnerabilities Identified

First seen 12 Feb 2026, 21:16 UTC • Api.Msrc.Microsoft

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Two denial of service vulnerabilities have been identified in Windows systems. CVE-2026-21243 affects the Lightweight Directory Access Protocol (LDAP) due to a null pointer dereference, while CVE-2026-20846 involves a buffer over-read in GDI+. Both vulnerabilities allow unauthorized attackers to disrupt service over a network.

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Timeline

2026-02-10

CVE-2026-21243 published

2026-02-10

CVE-2026-20846 published

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Multiple Windows Denial of Service Vulnerabilities Identified

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