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CVE-2026-20231: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in Cisco Cisco Secure Workload

0
Critical
VulnerabilityCVE-2026-20231cvecve-2026-20231
Published: 08/19/2026 (08/19/2026, 16:16:58 UTC)
Source: CVE Database V5
Vendor/Project: Cisco
Product: Cisco Secure Workload

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.

CVSS v3.1

Score 9.9critical

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected software

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=3.3.2.23=3.1.1.61=3.1.1.54=3.5.1.17=3.3.2.33=3.5.1.1=2.3.1.53=3.5.1.20=3.5.1.30=3.3.2.16=3.1.1.55=3.4.1.6=2.3.1.50=2.3.1.52=3.2.1.19=2.2.1.35=3.1.1.53=3.1.1.70=3.2.1.20=3.5.1.2=1.103.1.12=2.3.1.51=3.3.2.42=3.4.1.1=3.3.2.12=2.1.1.31=3.5.1.23=3.3.2.53=3.4.1.14=3.3.2.2=3.4.1.20=3.3.2.35=2.2.1.34=1.102.21=3.3.2.5=3.5.1.31=3.6.1.5=3.2.1.31=3.5.1.37=3.4.1.40=3.6.1.17=3.6.1.21=3.2.1.32=3.2.1.33=3.6.1.35=3.6.1.36=3.7.1.5=3.6.1.47=3.7.1.22=3.6.1.52=3.7.1.39=3.8.1.1=3.7.1.51=3.8.1.19=3.8.1.36=3.7.1.59=3.8.1.39=3.9.1.1=3.9.1.10=3.9.1.24=3.9.1.25=3.9.1.28=3.9.1.38=3.8.1.53=3.9.1.52=3.10.1.1=3.9.1.64=3.10.2.11=3.9.1.66=3.10.3.19=3.9.1.69=3.10.4.8=3.10.5.6=4.0.1.1=4.0.2.4=4.0.2.5=3.10.6.3=3.10.7.4=4.0.3.13=4.0.3.17=3.10.8.32.2.1.413.2.1.183.3.2.503.4.1.283.4.1.342.3.1.452.3.1.413.3.2.283.1.1.592.0.2.202.1.1.332.1.1.293.2.1.283.4.1.353.1.1.653.1.1.672.0.1.342.3.1.492.2.1.393.4.1.193.3.2.233.1.1.613.1.1.543.5.1.173.3.2.333.5.1.12.3.1.533.5.1.203.5.1.303.3.2.163.1.1.553.4.1.62.3.1.502.3.1.523.2.1.192.2.1.353.1.1.533.1.1.703.2.1.203.5.1.21.103.1.122.3.1.513.3.2.423.4.1.13.3.2.122.1.1.313.5.1.233.3.2.533.4.1.143.3.2.23.4.1.203.3.2.352.2.1.341.102.213.3.2.53.5.1.313.6.1.53.2.1.313.5.1.373.4.1.403.6.1.173.6.1.213.2.1.323.2.1.333.6.1.353.6.1.363.7.1.53.6.1.473.7.1.223.6.1.523.7.1.393.8.1.13.7.1.513.8.1.193.8.1.363.7.1.593.8.1.393.9.1.13.9.1.103.9.1.243.9.1.253.9.1.283.9.1.383.8.1.533.9.1.523.10.1.13.9.1.643.10.2.113.9.1.663.10.3.193.9.1.693.10.4.83.10.5.64.0.1.14.0.2.44.0.2.53.10.6.33.10.7.44.0.3.134.0.3.173.10.8.3

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/19/2026, 16:40:55 UTC

Technical Analysis

CVE-2026-20231 addresses multiple internally discovered vulnerabilities in Cisco Secure Workload related to improper neutralization of special elements in output, which can lead to injection attacks as categorized by CWE-74. The vulnerability was identified through an internal security review and affects numerous specific versions of Cisco Secure Workload. The CVSS 3.1 base score is 9.9, reflecting network attack vector, low attack complexity, required privileges, no user interaction, and complete impact on confidentiality, integrity, and availability. Cisco has not yet provided an official remediation level or patch information.

Potential Impact

The vulnerability allows an attacker with network access and privileges to potentially execute injection attacks that can compromise confidentiality, integrity, and availability of the affected system. The critical CVSS score of 9.9 indicates severe impact if exploited. However, no known exploits are reported in the wild so far.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Cisco has not published an official fix or temporary mitigation at this time. Users should monitor Cisco advisories for updates and apply patches once available.

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Technical Details

Data Version
5.2
Assigner Short Name
cisco
Date Reserved
2025-10-08T11:59:15.399Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a85d85eacd9273b49511c75

Added to database: 08/19/2026, 16:22:54 UTC

Last enriched: 08/19/2026, 16:40:55 UTC

Last updated: 08/19/2026, 22:46:37 UTC

Views: 5

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