Blue Coat ProxySG before SGOS 4.3.4.1, 5.x before SGOS 5.4.5.1, 5.5 before SGOS 5.5.4.1, and 6.x before SGOS 6.1.1.1 allows remote authenticated users to execute arbitrary CLI commands by leveraging read-only administrator privileges and establishing an HTTPS session.

Blue Coat ProxySG, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.

Cross-site scripting (XSS) vulnerability in the ICAP patience page in Blue Coat Security Gateway OS (SGOS) 4.2 before 4.2.9, 5.2 before 5.2.5, and 5.3 before 5.3.1.7 allows remote attackers to inject arbitrary web script or HTML via the URL.

Buffer overflow in k9filter.exe in BlueCoat K9 Web Protection 3.2.36, and probably other versions before 3.2.44, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long HTTP GET request to port 2372.

Blue Coat Systems WinProxy 6.1a and 6.0 r1c, and possibly earlier, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via a long HTTP CONNECT request, which triggers heap corruption.

Blue Coat Proxy Security Gateway OS (SGOS) 4.1.2.1 does not enforce CONNECT rules when using Deep Content Inspection, which allows remote attackers to bypass connection filters.

Blue Coat Systems Inc. WinProxy before 6.1a allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a large number of packets with 0xFF characters to the Telnet port (TCP 23), which corrupts the heap.

Buffer overflow in BlueCoat (a) WinProxy before 6.1a and (b) the web console access functionality in ProxyAV before 2.4.2.3 allows remote attackers to execute arbitrary code via a long Host: header.

The listening daemon in Blue Coat Systems Inc. WinProxy before 6.1a allows remote attackers to cause a denial of service (crash) via a long HTTP request that causes an out-of-bounds read.

Unknown vulnerability in Blue Coat Reporter before 7.1.2 allows remote unauthenticated attackers to add a license.