Windows Remote Desktop Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Remote Desktop allows an authorized attacker to elevate privileges locally.
MSRC compact vulnerability detail
CVE-2026-40398 · Windows Remote Desktop Services Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Remote Desktop allows an authorized attacker to elevate privileges locally.
Signals
Windows Remote Desktop
Elevation of Privilege
Exploited: No
Publicly disclosed: No
Exploitability: Exploitation More Likely
CWE
Patch Diff
Loading module diff metadata...
Resolved binary override
Use this when the MSRC module name cannot be mapped automatically or the resolved binary looks wrong.
Description
Heap-based buffer overflow in Windows Remote Desktop allows an authorized attacker to elevate privileges locally.
FAQ / Articles
FAQ
What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.