kcheckpass in KDE 3.2.0 up to 3.4.2 allows local users to gain root access via a symlink attack on lock files.

The (1) Kate and (2) Kwrite applications in KDE KDE 3.2.x through 3.4.0 do not properly set the same permissions on the backup file as were set on the original file, which could allow local users and possibly remote attackers to obtain sensitive information.

Multiple integer overflows in libgadu, as used in Kopete in KDE 3.2.3 to 3.4.1, ekg before 1.6rc3, GNU Gadu, CenterICQ, Kadu, and other packages, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an incoming message.

Buffer overflow in the kimgio library for KDE 3.4.0 allows remote attackers to execute arbitrary code via a crafted PCX image file.

Heap-based buffer overflow in the encodeURI and decodeURI functions in the kjs JavaScript interpreter engine in KDE 3.2.0 through 3.5.0 allows remote attackers to execute arbitrary code via a crafted, UTF-8 encoded URI.

backend/session.c in KDM in KDE 3.3.0 through 3.5.7, when autologin is configured and "shutdown with password" is enabled, allows remote attackers to bypass the password requirement and login to arbitrary accounts via unspecified vectors.

rendering/renderreplaced.cpp in Konqueror in KDE before 4.9.3 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted web page, related to "trying to reuse a frame with a null part."