CVE-2026-62778: Windows DNS Elevation of Privilege Vulnerability
Use after free in Windows DNS allows an unauthorized attacker to elevate privileges over a network.
Other sources
Windows DNS 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 10.0.14393.9418Patch KB5120418 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9115Patch KB5120238 - Upgrade
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Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - Upgrade
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Fixed in 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23338Patch KB5120385 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26280Patch KB5120386
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62778?
CVE-2026-62778 has a severity rating of 8.1, classified as high.
How does CVE-2026-62778 affect users?
CVE-2026-62778 allows unauthorized attackers to elevate privileges over a network, potentially compromising the system.
Which Windows versions are affected by CVE-2026-62778?
CVE-2026-62778 affects multiple versions including Windows 10, Windows Server 2012 to 2022.
How do I fix CVE-2026-62778?
To fix CVE-2026-62778, users should apply the latest security updates provided by Microsoft.
What type of vulnerability is CVE-2026-62778?
CVE-2026-62778 is classified as a Use After Free vulnerability, which can lead to elevation of privilege.