Untrusted search path vulnerability in gdk/win32/gdkinput-win32.c in GTK+ before 2.21.8 allows local users to gain privileges via a Trojan horse Wintab32.dll file in the current working directory.

Untrusted search path vulnerability in modules/engines/ms-windows/xptheme.c in GTK+ before 2.24.0 allows local users to gain privileges via a Trojan horse uxtheme.dll file in the current working directory, a different vulnerability than CVE-2010-4831.

Heap-based buffer overflow in Xchat-WDK before 1499-4 (2012-01-18) xchat 2.8.6 on Maemo architecture could allow remote attackers to cause a denial of service (xchat client crash) or execute arbitrary code via a UTF-8 line from server containing characters outside of the Basic Multilingual Plane (BMP).

Clemens Fries reported that, when using Cinnamon, it was possible to bypass the screensaver lock:

http://seclists.org/oss-sec/2014/q1/327

An attacker with physical access to the machine could use this flaw to take over the locked desktop session.

A patch is currently not yet available.