Multiple vulnerabilities have been reported in RealPlayer, where one has an unknown impact and others can be exploited by malicious people to compromise a user's system.
Wireshark is prone to multiple denial-of-service and buffer-overflow vulnerabilities. Exploiting these issues may allow attackers to crash the application and deny service to legitimate users. Attackers may also execute arbitrary code in the context of vulnerable users running the application. These issues affect Wireshark 0.8.20 through 1.2.8.
Secunia Research has discovered multiple vulnerabilities in various Symantec products, which can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.
CSIS Advisories