CVE-2026-61921: Windows Remote Desktop Client Information Disclosure Vulnerability
Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.
Other sources
Windows Remote Desktop Client Information Disclosure 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 10.0.26200.9168Fixed in 10.0.26100.9106Patch KB5120994 - Upgrade
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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 10.0.20348.5499Fixed 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 6.2.9200.26279Patch KB5120385 - Upgrade
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Fixed in 6.3.9600.23337Patch KB5120386 - Upgrade
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Fixed in 10.0.28000.2704Patch KB5121000 - Upgrade
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Fixed in 10.0.14393.9418Patch KB5120418 - Upgrade
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Fixed in 10.0.26100.9168Fixed in 10.0.26000.9106Patch KB5120994 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9168Fixed in 10.0.26100.9106Patch KB5120994
Event History
Frequently Asked Questions
What is the severity of CVE-2026-61921?
The severity of CVE-2026-61921 is medium with a score of 6.5.
What is CVE-2026-61921?
CVE-2026-61921 is a vulnerability in the Windows Remote Desktop Client that allows unauthorized information disclosure through an out-of-bounds read.
How do I fix CVE-2026-61921?
To fix CVE-2026-61921, ensure your Windows operating system is updated with the latest security patches from Microsoft.
What products are affected by CVE-2026-61921?
CVE-2026-61921 affects various versions of Microsoft Windows, including Windows 10, Windows 11, and multiple Windows Server editions.
What exploit can be executed using CVE-2026-61921?
An attacker can exploit CVE-2026-61921 to disclose information over a network without authentication.