CVE-2026-20231: Cisco Secure Workload

Critical severity, CVSS 9.9. EPSS: 0.5% chance of exploitation in the next 30 days.

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload 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-2026-20231 are related to improper neutralization of special elements issues that are grouped under the Common Weakness Enumeration (CWE) CWE-74.

Affected products

• Cisco Cisco Secure Workload: version 2.2.1.41 only; version 3.2.1.18 only; version 3.3.2.50 only; version 3.4.1.28 only; version 3.4.1.34 only; version 2.3.1.45 only; …

Published 2026-08-19. Last modified 2026-08-20.