Critical [CVE-2026-20231 +4] Cisco Secure Workload Software Security Hardening Release: August 2026
This critical-severity Cisco advisory covers CVE-2026-20231 and CVE-2026-20315 and 3 more CVEs affecting Secure Workload.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 5 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.
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Summary
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 software hardening releases that address 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 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).
Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
- Scope: These vulnerabilities affect Cisco Secure Workload Software Software as a Service (SaaS) and on-premises deployments, regardless of device configuration.
- Release 3.10 and earlier (first fixed: 3.10.9.1)
- Release 4.0 (first fixed: 4.0.4.16)
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
- 3.10.9.1
- 4.0.4.16
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Mitigation checklist
- Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
- Release 3.10 and earlier: upgrade to 3.10.9.1.
- Release 4.0: upgrade to 4.0.4.16.
- There are no workarounds that address these vulnerabilities.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
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