CVE-2026-20318 - Vulnerability Details

- Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Input Validation Vulnerabilities

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.

Published: 2026-08-19

Score: 9.6 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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.

Vendor Product Confidence Versions

Cisco

Secure Workload

88%

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

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00263.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-csw1-shSvndWP
https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification

History

Thu, 20 Aug 2026 17:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 20 Aug 2026 09:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Cisco Cisco secure Workload
Vendors & Products		Cisco Cisco secure Workload

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

Type	Values Removed	Values Added
References		https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification

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-2026-20318 are related to improper input validation issues that are grouped under the Common Weakness Enumeration (CWE) CWE-20.
Title		Cisco Secure Workload Software Security Hardening Release August 2026 - Improper Input Validation Vulnerabilities
Weaknesses		CWE-20
References		https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-csw1-shSvndWP
Metrics		cvssV3_1 `{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H'}`

Subscriptions

Cisco Secure Workload

MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2026-08-19T16:19:24.093Z

Updated: 2026-08-20T15:57:08.326Z

Reserved: 2025-10-08T11:59:15.410Z

Link: CVE-2026-20318

Vulnrichment

Updated: 2026-08-19T18:31:51.073Z

NVD

Status : Awaiting Analysis

Published: 2026-08-19T17:18:40.127

Modified: 2026-08-20T16:17:21.747

Link: CVE-2026-20318

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-20T14:15:05Z

Weaknesses

CWE-20
Improper Input Validation

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact High

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

JSON object

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