KDM in KDE 3.1.3 and earlier uses a weak session cookie generation algorithm that does not provide 128 bits of entropy, which allows attackers to guess session cookies via brute force methods and gain access to the user session.
Konqueror Embedded and KDE 2.2.2 and earlier does not validate the Common Name (CN) field for X.509 Certificates, which could allow remote attackers to spoof certificates via a man-in-the-middle attack.
KDE 2 and KDE 3.1.1 and earlier 3.x versions allows attackers to execute arbitrary commands via (1) PostScript (PS) or (2) PDF files, related to missing -dPARANOIDSAFER and -dSAFER arguments when using the kghostview Ghostscript viewer.
Multiple vulnerabilities in KDE 2 and KDE 3.x through 3.0.5 do not quote certain parameters that are inserted into a shell command, which could allow remote attackers to execute arbitrary commands via (1) URLs, (2) filenames, or (3) e-mail addresses.
Buffer overflow in konqueror in KDE 2.1 through 3.0 and 3.0.2 allows remote attackers to cause a denial of service (crash) via an IMG tag with large width and height attributes.
Unknown vulnerability in the rlogin KIO subsystem (rlogin.protocol) of KDE 2.x 2.1 and later, and KDE 3.x 3.0.4 and earlier, allows local and remote attackers to execute arbitrary code via a certain URL.
Unknown vulnerability in the telnet KIO subsystem (telnet.protocol) of KDE 2.x 2.1 and later allows local and remote attackers to execute arbitrary code via a certain URL.
Multiple buffer overflows in LISa on KDE 2.x for 2.1 and later, and KDE 3.x before 3.0.4, allow (1) local and possibly remote attackers to execute arbitrary code via the "lisa" daemon, and (2) remote attackers to execute arbitrary code via a certain "lan://" URL.
Buffer overflow in DSC 3.0 parser from GSview, as used in KGhostView in KDE 1.1 and KDE 3.0.3a, may allow attackers to cause a denial of service or execute arbitrary code via a modified .ps (PostScript) input file.