Use-after-free in FreeRDP - #VU146592
Published: September 1, 2026
Vulnerability identifier: #VU146592
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in the smartcard RDPDR device handling in DeviceServiceEntry() and devman teardown when worker thread creation fails after device registration. A local user can trigger worker creation failure and then perform normal channel teardown to cause a denial of service.
Exploitation requires smartcard redirection to be enabled.
Affected software
FreeRDP
Remediation
Install security update from vendor's website.
FreeRDP - update to 3.31.0