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Cisco Security Advisoriescisco-sa-hardening-crosswork-UzDTU9Vh

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. These vulnerabilities were found during internal testing and are not known to be actively exploited. To assist customers in patching and to streamline the disclosure process, Cisco has grouped these issues by their underlying vulnerability class - Common Weakness Enumeration (CWE) - and assigned a single Common Vulnerabilities and Exposures Identifier (CVE ID) to each CWE grouping. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-crosswork-UzDTU9Vh Security Impact Rating: Critical CVE: CVE-2026-20030,CVE-2026-20357,CVE-2026-20358,CVE-2026-20359

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CriticalCVSS not listedCritical severity
Scope

What the vendor says is affected

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What the vendor recommends

To assist customers in patching and to streamline the disclosure process, Cisco has grouped these issues by their underlying vulnerability class - Common Weakness Enumeration (CWE) - and assigned a single Common Vulnerabilities and Exposures Identifier (CVE ID) to each CWE grouping.

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Vulnerabilities

CVEs named in this advisory

CVE-2026-20030View CVSS, KEV, EPSS, and threat contextCVE-2026-20357View CVSS, KEV, EPSS, and threat contextCVE-2026-20358View CVSS, KEV, EPSS, and threat contextCVE-2026-20359View CVSS, KEV, EPSS, and threat context
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