CVE-2026-85421
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. A
Brocade Brocade Active Support Connectivity GatewayNetwork & edge
CVSS
8.7HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.22%Chance of exploitation activity in the next 30 days, higher than 12% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 3.5.0Brocade Active Support Connectivity GatewayCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 1
- Brocade Active Support Connectivity Gatewayaffected: all versions before 3.5.0CVE List