ReviewCritical

CVE-2026-20231

Cisco Cisco Secure Workload

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.

CVSS: 9.9
EPSS: 0.50%
CISA KEV: Not listed
Published: 2026.08.20

PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.50%

Technical severityCVSS 9.9

Vulnerability overview

Affected product and versions

Product: Cisco Cisco Secure Workload
Affected versions: >= 2.2.1.41, >= 3.2.1.18, >= 3.3.2.50, >= 3.4.1.28, >= 3.4.1.34, >= 2.3.1.45, >= 2.3.1.41, >= 3.3.2.28, >= 3.1.1.59, >= 2.0.2.20, >= 2.1.1.33, >= 2.1.1.29, >= 3.2.1.28, >= 3.4.1.35, >= 3.1.1.65, >= 3.1.1.67, >= 2.0.1.34, >= 2.3.1.49, >= 2.2.1.39, >= 3.4.1.19
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Cisco Cisco Secure Workload and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE: CWE-74