Out-of-bounds read in FreeRDP - #VU146588
Published: September 1, 2026
Vulnerability identifier: #VU146588
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-125
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 an out-of-bounds read in func_get_ep_desc() in the URBDRC channel when processing a crafted SELECT_CONFIGURATION descriptor followed by a bulk or interrupt transfer request. A remote attacker can send a crafted RDP server response to cause a denial of service.
Exploitation is reachable on clients with USB redirection enabled and relies on an InterfaceNumber-to-array-position mismatch together with an unchecked AlternateSetting index.
Affected software
FreeRDP
Remediation
Install security update from vendor's website.
FreeRDP - update to 3.31.0