CVE-2026-42985: Remote Desktop Client Remote Code Execution Vulnerability
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
Other sources
Remote Desktop Client Remote Code Execution Vulnerability
— Microsoft
Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
— 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 6.3.9600.23228Patch KB5094041 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26132Patch KB5094042 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9234Patch KB5094122 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2269Patch KB5095051 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.32995Patch KB5094125 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.8655Patch KB5094126 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7219Patch KB5093998 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.8655Patch KB5094126 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.7417Patch KB5094127 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7417Patch KB5094127 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5256Patch KB5094128 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.8880Patch KB5094123 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 1.2.7214.0 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2.0.1193.0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-42985?
CVE-2026-42985 has a severity score of 8.8, indicating a high level of risk.
How do I fix CVE-2026-42985?
To fix CVE-2026-42985, ensure that your system is updated with the latest security patches from Microsoft.
What systems are affected by CVE-2026-42985?
CVE-2026-42985 affects Microsoft Windows 10, Windows 11, and various versions of Windows Server including 2012 R2, 2016, 2019, 2022, and 2025.
What type of vulnerability is CVE-2026-42985?
CVE-2026-42985 is a heap-based buffer overflow vulnerability in the Remote Desktop Client.
Can CVE-2026-42985 allow remote code execution?
Yes, CVE-2026-42985 allows unauthorized attackers to execute arbitrary code over a network.