CVE-2026-83997: Windows Message Queuing Remote Code Execution Vulnerability
Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.
Other sources
Windows Message Queuing 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 10.0.28000.2954Patch KB5124012 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9445Patch KB5124008 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7582Patch KB5122880 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9445Patch KB5124008 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.7725Patch KB5122878 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7725Patch KB5122878 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5622Patch KB5122882
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
The vulnerability can be exploited remotely over a network without prior authentication or user interaction. Exploitation has high attack complexity.
What is the potential impact of successful exploitation?
Successful exploitation may allow an attacker to execute code. The supplied severity metrics indicate high potential impact to confidentiality, integrity, and availability.
Which systems should be assessed for exposure?
Assess Microsoft Windows 10, Windows 11, Windows Server 2022, and Windows Server 2025 systems, particularly those where Windows Message Queuing is reachable over the network.