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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

CVE-2026-20318 is a critical vulnerability in Cisco Secure Workload involving improper input validation. This issue was identified during an internal security review by Cisco and affects multiple specific versions of the product. The vulnerability has a high CVSS score of 9.6, indicating critical severity with high impact on integrity and availability. No known exploits are reported in the wild. The vulnerability is addressed by a software hardening release from Cisco.

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

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=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=3.10.8.3

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/11/2026, 07:47:22 UTC

Technical Analysis

CVE-2026-20318 concerns improper input validation vulnerabilities in Cisco Secure Workload, identified through Cisco's internal security review process. These vulnerabilities fall under CWE-20 and affect numerous specific versions of Cisco Secure Workload. The CVSS 3.1 score is 9.6 (AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H), reflecting network attack vector, low complexity, required privileges, no user interaction, scope change, no confidentiality impact, but high integrity and availability impact. Cisco has released a software hardening update to address these issues.

Potential Impact

The vulnerability allows an attacker with network access and low complexity methods, possessing privileges, to cause high integrity and availability impact on Cisco Secure Workload. There is no confidentiality impact. The scope is changed, meaning the vulnerability affects components beyond the initially vulnerable component. No known exploits are reported in the wild at this time.

Mitigation Recommendations

Cisco has released a software hardening update that addresses the improper input validation vulnerabilities. Users should apply the official Cisco updates corresponding to their affected versions to remediate this issue. Since this is an on-premises product, patching is required by the customer. No additional mitigation steps are indicated by the vendor advisory.

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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

Threat ID: 6a85d85eacd9273b49511c81

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

Last enriched: 09/11/2026, 07:47:22 UTC

Last updated: 10/04/2026, 10:02:26 UTC

Views: 65

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