CVE-2026-62717: Windows Message Queuing Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privileges locally.
Other sources
Windows Message Queuing Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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Fixed in 10.0.22631.7517Patch KB5120240 - Upgrade
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Fixed in 10.0.19045.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - Upgrade
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Fixed in 10.0.19044.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.14393.9418Patch KB5120418 - Upgrade
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Fixed in 10.0.28000.2704Patch KB5121000 - Upgrade
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Fixed in 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
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Fixed in 10.0.17763.9115Patch KB5120238 - Upgrade
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Fixed in 6.2.9200.26280Patch KB5120386 - Upgrade
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Fixed in 6.3.9600.23338Patch KB5120385 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26200.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.26200.9168Fixed in 10.0.26200.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26100.9106Patch KB5120994
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62717?
The severity of CVE-2026-62717 is rated as high with a score of 7.8.
How does CVE-2026-62717 affect Microsoft Windows?
CVE-2026-62717 allows an authorized attacker to elevate privileges locally due to a heap-based buffer overflow in Windows Message Queuing.
Which Windows versions are affected by CVE-2026-62717?
CVE-2026-62717 affects Microsoft Windows 10, Windows 11, Windows Server 2012, 2016, 2019, 2022, and Windows Server 2025.
How can I mitigate the risk of CVE-2026-62717?
To mitigate the risk of CVE-2026-62717, ensure that you apply the latest security updates provided by Microsoft.
What is a buffer overflow in the context of CVE-2026-62717?
In the context of CVE-2026-62717, a buffer overflow occurs when data exceeds a buffer's storage capacity, potentially allowing attackers to execute arbitrary code.