CVE Database›Document archive›CVE-2026-26965

CVE-2026-26965

freerdp: FreeRDP: Arbitrary code execution via heap out-of-bounds write in RLE planar decode path

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Severity

Important

Red Hat Product Security

8.8

CVSS 3.1

Review impact separately from score.

Published · February 26, 2026

Updated · June 30, 2026

Description

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP). A malicious RDP server can exploit a heap out-of-bounds write vulnerability in the planar_decompress_plane_rle() function. This vulnerability allows the server to write past the end of a temporary buffer, potentially overwriting critical data such as function pointers. This can lead to arbitrary code execution on the connecting FreeRDP client.

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 · 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-787 · Out-of-bounds Write