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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Cisco Cisco Secure Workload unknown
Version Status Constraints
2.2.1.41 affected —
3.2.1.18 affected —
3.3.2.50 affected —
3.4.1.28 affected —
3.4.1.34 affected —
2.3.1.45 affected —
2.3.1.41 affected —
3.3.2.28 affected —
3.1.1.59 affected —
2.0.2.20 affected —
2.1.1.33 affected —
2.1.1.29 affected —
3.2.1.28 affected —
3.4.1.35 affected —
3.1.1.65 affected —
3.1.1.67 affected —
2.0.1.34 affected —
2.3.1.49 affected —
2.2.1.39 affected —
3.4.1.19 affected —
3.3.2.23 affected —
3.1.1.61 affected —
3.1.1.54 affected —
3.5.1.17 affected —
3.3.2.33 affected —
3.5.1.1 affected —
2.3.1.53 affected —
3.5.1.20 affected —
3.5.1.30 affected —
3.3.2.16 affected —
3.1.1.55 affected —
3.4.1.6 affected —
2.3.1.50 affected —
2.3.1.52 affected —
3.2.1.19 affected —
2.2.1.35 affected —
3.1.1.53 affected —
3.1.1.70 affected —
3.2.1.20 affected —
3.5.1.2 affected —
1.103.1.12 affected —
2.3.1.51 affected —
3.3.2.42 affected —
3.4.1.1 affected —
3.3.2.12 affected —
2.1.1.31 affected —
3.5.1.23 affected —
3.3.2.53 affected —
3.4.1.14 affected —
3.3.2.2 affected —
3.4.1.20 affected —
3.3.2.35 affected —
2.2.1.34 affected —
1.102.21 affected —
3.3.2.5 affected —
3.5.1.31 affected —
3.6.1.5 affected —
3.2.1.31 affected —
3.5.1.37 affected —
3.4.1.40 affected —
3.6.1.17 affected —
3.6.1.21 affected —
3.2.1.32 affected —
3.2.1.33 affected —
3.6.1.35 affected —
3.6.1.36 affected —
3.7.1.5 affected —
3.6.1.47 affected —
3.7.1.22 affected —
3.6.1.52 affected —
3.7.1.39 affected —
3.8.1.1 affected —
3.7.1.51 affected —
3.8.1.19 affected —
3.8.1.36 affected —
3.7.1.59 affected —
3.8.1.39 affected —
3.9.1.1 affected —
3.9.1.10 affected —
3.9.1.24 affected —
3.9.1.25 affected —
3.9.1.28 affected —
3.9.1.38 affected —
3.8.1.53 affected —
3.9.1.52 affected —
3.10.1.1 affected —
3.9.1.64 affected —
3.10.2.11 affected —
3.9.1.66 affected —
3.10.3.19 affected —
3.9.1.69 affected —
3.10.4.8 affected —
3.10.5.6 affected —
4.0.1.1 affected —
4.0.2.4 affected —
4.0.2.5 affected —
3.10.6.3 affected —
3.10.7.4 affected —
4.0.3.13 affected —
4.0.3.17 affected —
3.10.8.3 affected —

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-csw1-shSvndWP cve-icon cve-icon
History

Wed, 19 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Neutralization of Special Elements Vulnerabilities
Weaknesses CWE-74
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-08-19T18:31:50.763Z

Reserved: 2025-10-08T11:59:15.399Z

Link: CVE-2026-20231

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-19T17:18:39.227

Modified: 2026-08-19T17:18:39.227

Link: CVE-2026-20231

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses