CVE-2026-50487: Windows DNS Client Elevation of Privilege Vulnerability
Use after free in Microsoft Windows DNS allows an unauthorized attacker to elevate privileges over a network.
Other sources
Windows DNS Client Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.8875Patch KB5101650 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2525Patch KB5101649 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.8875Patch KB5101650 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33158Patch KB5099536
Event History
Frequently Asked Questions
What is the severity of CVE-2026-50487?
CVE-2026-50487 has a critical severity rating of 9.8.
What is CVE-2026-50487?
CVE-2026-50487 is a vulnerability in the Windows DNS Client that allows attackers to elevate privileges over a network due to a use after free condition.
Which versions of Windows are affected by CVE-2026-50487?
CVE-2026-50487 affects Microsoft Windows 11, Windows 11 24h2, Windows 11 25h2, Windows 11 26h1, and Windows Server 2025.
What can attackers do with CVE-2026-50487?
Attackers exploiting CVE-2026-50487 can elevate their privileges, potentially allowing unauthorized access to sensitive information or system resources.
How do I fix CVE-2026-50487?
To fix CVE-2026-50487, apply the latest security updates released by Microsoft for the affected Windows versions.