CVE-2026-20357: Missing Authentication for Critical Function in Cisco Cisco Crosswork Planning
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork 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-2026-20357 are related to missing authentication for critical function issues that are grouped under the Common Weakness Enumeration (CWE) CWE-306.
AI Analysis
Technical Summary
Cisco Crosswork Planning contains a missing authentication vulnerability (CVE-2026-20357) classified under CWE-306. This issue allows unauthenticated remote attackers to access critical functions without proper authentication, leading to complete compromise of confidentiality, integrity, and availability. The vulnerability affects multiple exact versions of Cisco Crosswork Planning, including 7.0.0 through 7.2.0. Cisco has not yet published an official fix or remediation guidance. The CVSS v3.1 base score is 10.0, with vector AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H, indicating network attack vector, low attack complexity, no privileges or user interaction required, and complete impact on system security properties.
Potential Impact
Successful exploitation of this vulnerability could allow unauthenticated attackers to perform critical functions within Cisco Crosswork Planning, resulting in full compromise of confidentiality, integrity, and availability of the affected system. This could lead to unauthorized data access, modification, or disruption of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation has been published by Cisco, users should monitor Cisco's security advisories for updates and consider restricting network access to the affected versions until a patch is available.
CVE-2026-20357: Missing Authentication for Critical Function in Cisco Cisco Crosswork Planning
Description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork 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-2026-20357 are related to missing authentication for critical function issues that are grouped under the Common Weakness Enumeration (CWE) CWE-306.
CVSS v3.1
Score 10.0critical
Affected software
pkg:github/cisco/crosswork-planningRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Cisco Crosswork Planning contains a missing authentication vulnerability (CVE-2026-20357) classified under CWE-306. This issue allows unauthenticated remote attackers to access critical functions without proper authentication, leading to complete compromise of confidentiality, integrity, and availability. The vulnerability affects multiple exact versions of Cisco Crosswork Planning, including 7.0.0 through 7.2.0. Cisco has not yet published an official fix or remediation guidance. The CVSS v3.1 base score is 10.0, with vector AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H, indicating network attack vector, low attack complexity, no privileges or user interaction required, and complete impact on system security properties.
Potential Impact
Successful exploitation of this vulnerability could allow unauthenticated attackers to perform critical functions within Cisco Crosswork Planning, resulting in full compromise of confidentiality, integrity, and availability of the affected system. This could lead to unauthorized data access, modification, or disruption of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary mitigation has been published by Cisco, users should monitor Cisco's security advisories for updates and consider restricting network access to the affected versions until a patch is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- cisco
- Date Reserved
- 2025-10-08T11:59:15.414Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a85d860acd9273b49511ca5
Added to database: 08/19/2026, 16:22:56 UTC
Last enriched: 08/19/2026, 16:37:45 UTC
Last updated: 08/19/2026, 18:52:43 UTC
Views: 7
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.