TCP: Microsoft Remote Desktop Client CVE-2026-42985 Remote Code Execution
This signature detects attempts to exploit a known vulnerability against Microsoft Remote Desktop Client. A successful attack can lead to arbitrary code execution.
References
CVE: CVE-2026-42985
Short Name
TCP:S2C:CVE-2026-42985-RCE
Severity
Major
Recommended
True
Recommended Action
Drop
Category
TCP
Keywords
CVE-2026-42985 Client Code Desktop Execution Microsoft Remote
Release Date
06/09/2026
Supported Platforms
mx-19.3
vmx-19.3
vsrx-19.2
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vmx-19.4
mx-19.4
srxevo-25.4
vsrx-26.2
srx-26.2
srx-branch-26.2
vsrx3bsd-26.2
mx-12.3
srx-12.3
srx-branch-12.3
vsrx-12.3
Sigpack Version
3915
Port
TCP/3389
False Positive
Unknown