CVE-2026-20281: Missing Release of Memory after Effective Lifetime

A vulnerability in Cisco Desk Phone 9800 Series, Cisco IP Phone 7800 and 8800 Series, and Cisco Video Phone 8875 that are running Cisco Session Initiation Protocol SIP Software could allow an unauthenticated, remote attacker to cause a denial of service DoS condition on an affected device. This...

CVE-2019-1635: Improper Handling of Exceptional Conditions

A vulnerability in the call-handling functionality of Session Initiation Protocol SIP Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service DoS condition...

CVE-2019-1716: Improper Input Validation

A vulnerability in the web-based management interface of Session Initiation Protocol SIP Software for Cisco IP Phone 7800 Series and Cisco IP Phone 8800 Series could allow an unauthenticated, remote attacker to cause a denial of service DoS condition or execute arbitrary code. The vulnerability...

CVE-2008-6140: Undefined Security Weakness

Unspecified vulnerability in the Session Initiation Protocol SIP implementation in Avaya one-X Desktop Edition 2.1.0.78 allows remote attackers to cause a denial of service crash via unspecified vectors...