Improper Null Termination in FreeRDP - #VU152403
Published: September 28, 2026
Vulnerability identifier: #VU152403
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-170
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper null termination in convert_filedescriptors_to_file_list() when processing a crafted FileGroupDescriptorW clipboard response after the victim pastes clipboard files. A remote attacker can send an odd-length FILEDESCRIPTORW blob with a non-NUL-terminated cFileName field to cause a denial of service.
Only Unix desktop clients with WITH_FUSE enabled are affected.
Affected software
FreeRDP
Remediation
Install security update from vendor's website.
FreeRDP - update to 3.32.0