Paper/Archive/CVE-2026-20231

CVE-2026-20231

Cisco Cisco Secure Workload — Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Neutralization of Special Elements Vulnerabilities

EPSS 0.5%CVSS 9.9

critical.is priorityof 100

CVSS 9.9 (CNA)9.9 / 10 × 3029.7 Not in CISA KEV+300.0 EPSS percentile 44.6.446 × 208.9 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

Cisco Secure Workload2.2.1.41–CNA

Cisco Secure Workload3.2.1.18–CNA

Cisco Secure Workload3.3.2.50–CNA

Cisco Secure Workload3.4.1.28–CNA

Cisco Secure Workload3.4.1.34–CNA

Cisco Secure Workload2.3.1.45–CNA

Cisco Secure Workload2.3.1.41–CNA

Cisco Secure Workload3.3.2.28–CNA

Cisco Secure Workload3.1.1.59–CNA

Cisco Secure Workload2.0.2.20–CNA

Cisco Secure Workload2.1.1.33–CNA

Cisco Secure Workload2.1.1.29–CNA

Scores by source

cisco (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refsec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-csw1-shSvndWP refcve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification