Advisories

Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software EIGRP Denial of Service Vulnerability

A vulnerability in the EIGRP implementation in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, adjacent attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to improper resource management when handling EIGRP update messages. An attacker could exploit this vulnerability by sending crafted EIGRP updates at a high rate to an affected device. A successful exploit could allow the attacker to trigger a memory leak that will eventually cause the affected device to reload unexpectedly. Cisco has released software updates

Read at Cisco PSIRT Security Advisories

Vendor

Cisco

Product

ASA, Firepower / FTD

Fix

available

Exposure class

Edge / VPN / firewall

• Cisco PSIRT Security Advisories (sec.cloudapps.cisco.com)
• CVE-2026-20222 on this site · NVD · CVE.org · Vulnpedia

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