CVE-2026-20330criticalCWE-707

CVE-2026-20330: critical vulnerability in Cisco Secure Firewall Adaptive Security…

Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Improper Neutralization Vulnerabilities

Published · Updated

Follow this CVE+ Monitor Cisco Secure Firewall Threat Defense+ Monitor Cisco Secure Firewall Adaptive Security Appliance

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.9epss 0.5%
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security Appliance Software, Cisco Secure Firewall Threat Defense Software and Cisco Secure Firewall Management Center Software engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.   The vulnerabilities tracked by CVE-2026-20330 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-707.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
Cisco · Cisco Secure Firewall Adaptive Security Appliance (ASA) SoftwareCisco · Cisco Secure Firewall Management Center (FMC)Cisco · Cisco Secure Firewall Threat Defense (FTD) Software
Related CVEs — Cisco Secure Firewall Adaptive Security…

In the same product, most dangerous first.

CVE-2026-20079CRITICALCisco Secure Firewall Management Center Authentication Bypass Remote Code Execution VulnerabilityEPSS 88.7%KEVCVE-2025-20362MEDIUMCVE-2025-20362EPSS 86.7%KEVCVE-2025-20333CRITICALCVE-2025-20333EPSS 72.0%KEVCVE-2026-20131CRITICALCisco Secure Firewall Management Center Software Remote Code Execution VulnerabilityEPSS 44.4%KEVCVE-2026-20316MEDIUMCisco Secure Firewall Management Center Software Static Credential VulnerabilityEPSS 35.1%KEVCVE-2026-20349HIGHCisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service VulnerabilityEPSS 1.0%KEV