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CVE-2026-20318: Improper Input Validation in Cisco Cisco Secure Workload

0
Critical
VulnerabilityCVE-2026-20318cvecve-2026-20318
Published: 08/19/2026 (08/19/2026, 16:19:24 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-2026-20318 are related to improper input validation issues that are grouped under the Common Weakness Enumeration (CWE) CWE-20.

CVSS v3.1

Score 9.6critical

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/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, 16:38:50 UTC

Technical Analysis

CVE-2026-20318 concerns improper input validation issues in Cisco Secure Workload, identified through Cisco's internal security review process. These issues fall under CWE-20 and affect numerous exact versions of Cisco Secure Workload as listed. The vulnerability has a CVSS 3.1 base score of 9.6, with attack vector network, low attack complexity, requiring low privileges and no user interaction, and impacts include high integrity and availability impacts with no confidentiality impact. No vendor advisory or patch information is currently available, and no known exploits are reported in the wild.

Potential Impact

The vulnerability allows an attacker with network access and low privileges to cause high impact on the integrity and availability of the affected Cisco Secure Workload systems. Confidentiality is not impacted. The critical CVSS score reflects the potential for significant disruption or manipulation of the system if exploited.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Cisco has released a software hardening update addressing multiple vulnerabilities including this one, but no explicit patch or workaround details are provided. Users should monitor Cisco advisories for updates and apply official fixes once available.

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Technical Details

Data Version
5.2
Assigner Short Name
cisco
Date Reserved
2025-10-08T11:59:15.410Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a85d85eacd9273b49511c81

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

Last enriched: 08/19/2026, 16:38:50 UTC

Last updated: 08/19/2026, 19:22:29 UTC

Views: 6

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