CVE-2026-57158

A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol (RDP). FreeRDP clients using the Graphics (GFX) pipeline are vulnerable to an out-of-bounds read. A malicious RDP server can exploit this by sending a specially crafted, truncated RDPGFX_CMDID_WIRETOSURFACE_1 planar payload. This can lead to reading one byte beyond the intended buffer, potentially disclosing sensitive information or causing a denial of service.

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 for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.