CVE-2026-109256
freerdp: FreeRDP: Denial of Service via heap buffer overflow during clipboard image conversion
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 13, 2026
Updated · October 29, 2026
Description
A flaw was found in FreeRDP. A remote attacker acting as a malicious Remote Desktop Protocol (RDP) clipboard peer can cause a Denial of Service (DoS) by sending a specially crafted image over the clipboard channel. When the client converts the image to the PNG format, a memory reallocation failure triggers a heap-based buffer overflow, causing an application crash.
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 · 5.3CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-787 · Out-of-bounds Write