BT – BT Home Hub cgi/b authentication bypass

Advisory ID

Vulnerability Information



BT Home Hub router could allow a remote attacker to bypass authentication, caused by an error in cgi/b. By appending an encoded backslash, percent, or tilde character to PATH_INFO, an attacker could read or change arbitrary administrative settings and make unauthorized VoIP telephone calls.

Release Date





The UCTM solution from RedShift Networks provides the industry’s first complete security solution developed to secure VOIP networks, endpoints and applications. His research team is constantly looking for new attack patterns, advanced penetration testing methods, vulnerability identification and deployment of new signatures for constantly subscribed clients. For more information visit

External Resources



Common Vulnerabilities and Exposures (CVE)