Summary
Impact: Elevation of Privilege. Microsoft rating: Critical. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.
What privileges could an attacker gain by exploiting this vulnerability?
Successful exploitation could allow an attacker operating inside a guest virtual machine to gain the privileges of the affected virtualization service on the host.
Security updates
10.0.14393.9688 — https://support.microsoft.com/help/5131291
10.0.17763.9487 — https://support.microsoft.com/help/5131085
10.0.20348.5870 — https://support.microsoft.com/help/5131090
10.0.26100.33822 — https://support.microsoft.com/help/5131080
10.0.26100.33730 — https://support.microsoft.com/help/5131077
Vulnerabilities 1
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High 7.8
Windows Remote Desktop Services Elevation of Privilege Vulnerability
Double free in Windows Remote Desktop Services allows an authorized attacker to elevate privileges locally.
Revision history
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#1
Information published.
References
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CVE-2026-119957 Windows Remote Desktop Services Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-119957
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss