CVE-2026-85489: CWE-306: Missing Authentication for Critical Function in Brocade Brocade Active Support Connectivity Gateway
Description
CVE-2026-85489 is a high-severity authentication vulnerability in the Brocade Active Support Connectivity Gateway (ASCG) administrative management service. It allows unauthenticated network users to perform privileged API actions such as accessing sensitive configuration data, modifying device inventories, and changing operational settings. This affects all versions prior to 3.5.0.
CVSS v4.0
Score 8.7high
Affected software
Brocade
Brocade Active Support Connectivity Gateway
pkg:github/brocade/active-support-connectivity-gatewayRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An authentication flaw (CWE-306) exists in the Brocade ASCG administrative management service component, enabling unauthenticated network users to issue direct API requests that perform privileged actions. These actions include accessing sensitive system configuration mapping data, modifying managed device inventories, and altering operational settings. The vulnerability affects all versions before 3.5.0 and has a CVSS 4.0 score of 8.7, indicating high severity.
Potential Impact
Unauthenticated attackers can perform privileged operations on the Brocade ASCG device, potentially leading to unauthorized disclosure of sensitive configuration data, unauthorized modification of device inventories, and changes to operational settings. This could compromise the integrity and confidentiality of the managed network environment.
Mitigation Recommendations
A fixed version 3.5.0 or later addresses this vulnerability. Users should upgrade to Brocade ASCG version 3.5.0 or above to remediate this issue. No vendor advisory or patch link is provided, so confirm patch availability with the vendor before upgrading.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- brocade
- Date Reserved
- 2026-09-03T21:31:03.838Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac73cd82cdf04f656f313f1
Added to database: 10/08/2026, 06:48:56 UTC
Last enriched: 10/08/2026, 07:03:23 UTC
Last updated: 10/08/2026, 07:08:10 UTC
Views: 5
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