Vulnerability Bulletins

Cisco Firepower Threat Defense Software Generic Routing Encapsulation Denial of Service Vulnerability

System information

Affected software Cisco


A vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a memory handling error that occurs when GRE traffic is processed. An attacker could exploit this vulnerability by sending a crafted GRE payload through an affected device. A successful exploit could allow the

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Standar resources

Property Value
CVE CVE-2022-20946.

Version history

Version Comments Date
1.0 Advisory issued 2022-12-25
Ministerio de Defensa