OCTOBER 7, 2026
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Case File

CVE-2026-20331

CRITICAL · CVSS 9.6 EPSS 0.23%

Source: NVD + CISA KEV + EPSS · Published 2026-09-16 · Last synced 2026-10-07

CyberRota Analysis

AI-Generated

Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software, and Secure Firewall Management Center Software are vulnerable due to inadequate protection mechanisms, which could lead to unauthorized access and exploitation of the systems. The critical severity of this vulnerability (CVSS 9.6) necessitates immediate attention from organizations utilizing these Cisco products to mitigate potential security breaches. Security teams should prioritize patching and hardening their systems to safeguard against potential threats stemming from this vulnerability.

CVE
CVE-2026-20331
Severity
CRITICAL
CVSS
9.6
EPSS
0.23%
Cisco

Original NVD Description

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-2026-20331 are related to the failure of protection mechanisms issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-693.