CVE-2026-20357: Cisco Crosswork Security Hardening Release: August 2026
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork 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-2026-20357 are related to missing authentication for critical function issues that are grouped under the Common Weakness Enumeration (CWE) CWE-306.
Affected Software
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The provided severity vector indicates network-based exploitation with low attack complexity, no privileges required, and no user interaction required. The identified weakness is missing authentication for critical functions.
What is the potential impact if exploitation succeeds?
The provided vector rates confidentiality, integrity, and availability impact as high, with scope changed. The overall severity is critical with a score of 10.
Which configurations or versions are affected?
The supplied information does not identify affected Cisco Crosswork versions, deployment configurations, or whether the issue is present in default installations.
How can I determine whether my deployment is already affected or mitigated?
The provided data does not include indicators of compromise, vulnerable endpoints, configuration checks, or remediation version information. Review the referenced Cisco security advisory for product-specific verification and update guidance.