OCTOBER 13, 2026
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Case File

CVE-2026-20222

HIGH · CVSS 7.4 EPSS 0.17% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-16 · Last synced 2026-10-13

CyberRota Analysis

AI-Generated

A vulnerability in the EIGRP implementation of Cisco Secure Firewall ASA and FTD Software allows unauthenticated adjacent attackers to send crafted EIGRP update messages, potentially leading to a denial of service (DoS) by causing the device to reload unexpectedly. This issue arises from improper resource management during EIGRP message handling, resulting in a memory leak. Organizations using affected Cisco firewall products should prioritize remediation to prevent service disruptions.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-20222
Severity
HIGH
CVSS
7.4
EPSS
0.17%
Cisco

Original NVD Description

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.