Out-of-bounds read in FreeRDP - #VU146581
Published: September 1, 2026
Vulnerability identifier: #VU146581
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/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 disclose sensitive information or cause a denial of service.
The vulnerability exists due to out-of-bounds read in rdpdr_dump_packet in libfreerdp/utils/rdpdr_utils.c when processing a crafted RDPDR PAKID_CORE_CLIENT_NAME packet. A remote attacker can send a specially crafted packet with a large computerNameLen value to disclose sensitive information or cause a denial of service.
The issue is reachable before state-machine or length validation and requires TRACE-level logging to be enabled for the rdpdr logger.
Affected software
FreeRDP
Remediation
Install security update from vendor's website.
FreeRDP - update to 3.31.0