CVE-2026-85421CWE-306

CVE-2026-85421

High · published October 8, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
12.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · 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
EPSS
0.00222 · 12.1th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-10-08T11:16Z
Affected products (1)
ProductVersionsFixed in
broadcom/brocade_active_support_connectivity_gateway< 3.5.03.5.0
References (1)
https://support.broadcom.com/external/content/SecurityAdvisories/0/38378 · [email protected]
EPSS history
Timeline
  • 09 OCT 03:32Z
    EPSS moved — → 0%
    epss
  • 08 OCT 06:16Z
    A critical security vulnerability has been identified in Brocade ASCG versions before 3.5.0
    cvelistv5
  • 08 OCT 06:16Z
    A critical security vulnerability has been identified in Brocade ASCG versions before 3.5.0
    cvelistv5