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CVE-2026-42913

7.5 · HIGH

Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Published Jun 9, 2026microsoftCWE-362EPSS 0.47%

Overview

CVE-2026-42913 is a high-severity vulnerability affecting microsoft remote_desktop_client. It was published on June 9, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Remediation

Check the references section for vendor advisories and patches from microsoft. Update remote_desktop_client to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
microsoftremote_desktop_client>= 0, < 1.2.7214Affected
microsoftwindows_11_23h2>= 0, < 10.0.22631.7219Affected
microsoftwindows_11_24h2>= 0, < 10.0.26100.8655Affected
microsoftwindows_11_25h2>= 0, < 10.0.26200.8655Affected
microsoftwindows_11_26h1>= 0, < 10.0.28000.2269Affected
microsoftwindows_server_2022>= 0, < 10.0.20348.5256Affected
microsoftwindows_server_2025>= 0, < 10.0.26100.32995Affected

References

Refmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-42913

How CyberStrike helps

Frequently asked questions

What is CVE-2026-42913?

CVE-2026-42913 is a high-severity vulnerability affecting microsoft remote_desktop_client. It was published on June 9, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-42913?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-42913?

Check the references section for vendor advisories and patches from microsoft. Update remote_desktop_client to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-42913?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-42913 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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