Vulnerability · Published Oct 8, 2026 · Assigned by brocade
CVE-2026-85421
High 8.7
In plain English
A high-severity missing authentication in Brocade Active Support Connectivity Gateway from Brocade. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).
Official description
A critical security vulnerability has been identified in Brocade ASCG versions before 3.5.0. The HTTPS service fails to properly enforce authentication or access control checks on incoming requests. An unauthenticated attacker with network access can issue control commands, alter cluster states, and modify system configurations, leading to a complete compromise of the streaming service control plane.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Brocade | Brocade Active Support Connectivity Gateway | 0 – before 3.5.0 |
Weakness: CWE-306 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N