Kerio WinRoute Firewall 6.2.2 and earlier allows remote attackers to cause a denial of service (crash) via malformed DNS responses.

Unspecified vulnerability in Kerio WinRoute Firewall before 6.1.3 allows remote attackers to cause a denial of service (crash) via certain RTSP streams.

Unspecified vulnerability in Kerio WinRoute Firewall before 6.1.3 allows remote attackers to authenticate to the service using an account that has been disabled.

Kerio WinRoute Firewall before 6.2.1 allows remote attackers to cause a denial of service (application crash) via unknown vectors in the "email protocol inspectors," possibly (1) SMTP and (2) POP3.

The proxy server in Kerio WinRoute Firewall before 6.4.1 does not properly enforce authentication for HTTPS pages, which has unknown impact and attack vectors. NOTE: it is not clear whether this issue crosses privilege boundaries.