Integer overflow in FreeRDP - #VU134504
Published: June 15, 2026
Vulnerability identifier: #VU134504
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: FreeRDP
Affected software:
FreeRDP
FreeRDP
Detailed vulnerability description
The vulnerability allows a remote attacker to cause an out-of-bounds read.
The vulnerability exists due to integer overflow in freerdp_image_copy_from_icon_data() when processing a crafted RAIL icon update PDU. A remote attacker can send a specially crafted icon update with attacker-controlled dimensions and pixel data to cause an out-of-bounds read.
Only FreeRDP-based clients running in RAIL/Remote App mode are affected; desktop mode sessions are not affected.
Remediation
Install security update from vendor's website.