In Tencent QQ through 9.7.8.29039 and TIM through 3.4.7.22084, QQProtect.exe and QQProtectEngine.dll do not validate pointers from inter-process communication, which leads to a write-what-where condition.

Shenzhen Tencent TIM Windows client 3.0.0.21315 has a DLL hijacking vulnerability, which can be exploited by attackers to execute malicious code.