CVE-2025-26595 | Red Hat Enterprise Linux 6/7/8/9 X.org X11 Server/TigerVNC XkbVModMaskText stack-based overflow

A vulnerability has been found in Red Hat Enterprise Linux 6/7/8/9 and classified as critical. Affected by this vulnerability is the function XkbVModMaskText of the component X.org X11 Server/TigerVNC. The manipulation leads to stack-based buffer overflow.

This vulnerability is known as CVE-2025-26595. The attack needs to be approached locally. There is no exploit available.