CVE-2026-109255
freerdp: freerdp: Arbitrary code execution via integer truncation in license stream validation
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 13, 2026
Updated · October 13, 2026
Description
A flaw was found in FreeRDP. An integer truncation issue in license stream length validation allows a malicious Remote Desktop Protocol (RDP) server to bypass size checks by sending a specially crafted licensing request. This flaw leads to an undersized memory allocation and a heap-based buffer overflow, potentially allowing arbitrary code execution or causing a Denial of Service (DoS) on connecting 32-bit client systems.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 6.8CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H
CWE-787 · Out-of-bounds Write