CVE-2026-62781: RPC Runtime Library Remote Code Execution Vulnerability
Heap-based buffer overflow in RPC Runtime allows an unauthorized attacker to execute code over a network.
Other sources
RPC Runtime Library Remote Code Execution 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 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228 - Upgrade
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Fixed in 10.0.26200.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.19045.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.19044.7663Patch KB5120249 - Upgrade
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Fixed in 10.0.22631.7517Patch KB5120240 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26000.9106Patch KB5120994 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26100.9106Patch KB5120994 - 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 6.3.9600.23337Patch KB5120386 - Upgrade
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Fixed in 6.2.9200.26279Patch KB5120385 - Upgrade
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Fixed in 10.0.14393.9418Patch KB5120418
Event History
Frequently Asked Questions
What is the risk level of CVE-2026-62781?
CVE-2026-62781 has a risk level of 75, which indicates a high severity.
What are the potential impacts of CVE-2026-62781?
CVE-2026-62781 could allow an unauthorized attacker to execute code remotely due to a heap-based buffer overflow.
How can I secure my systems against CVE-2026-62781?
To secure against CVE-2026-62781, ensure all affected Microsoft Windows systems are updated with the latest patches from Microsoft.
Which versions of Windows are affected by CVE-2026-62781?
CVE-2026-62781 affects Microsoft Windows 10, Windows 11, and various versions of Windows Server, including 2012 through 2025.
Is CVE-2026-62781 a buffer overflow vulnerability?
Yes, CVE-2026-62781 is classified as a buffer overflow vulnerability that resides in the RPC Runtime Library.