Vulnerability Bulletins

Cisco IP Phone 7800 and 8800 Series Cisco Discovery Protocol Stack Overflow Vulnerability

System information

Affected software Cisco


A vulnerability in the Cisco Discovery Protocol processing feature of Cisco IP Phone 7800 and 8800 Series firmware could allow an unauthenticated, adjacent attacker to cause a stack overflow on an affected device. This vulnerability is due to insufficient input validation of received Cisco Discovery Protocol packets. An attacker could exploit this vulnerability by sending crafted Cisco Discovery Protocol traffic to an affected device. A successful exploit could allow the attacker to cause a

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Standar resources

Property Value
CVE CVE-2022-20968.

Version history

Version Comments Date
1.0 Advisory issued 2023-04-28
Ministerio de Defensa
Presidencia española. Consejo de la Unión Europea