CVE-2026-85421A critical security vulnerability has been identified in Brocade ASCG versions before 3.5.0.
Updated under an hour ago ()
Does this affect you?
It affects Brocade Active Support Connectivity Gateway and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.22%, higher than 12% of scored CVEs.
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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.
- CVSS
- 8.7 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-306
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.22% (percentile 12)
- Assigned by
- brocade
- NVD analysis
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Brocade Brocade Active Support Connectivity Gateway brocade:active_support_connectivity_gateway (from the name) | before 3.5.0 | CNA record |
broadcom brocade_active_support_connectivity_gateway broadcom:brocade_active_support_connectivity_gateway | before 3.5.0 | NVD |
References
- https://support.broadcom.com/external/content/SecurityAdvisories/0/38378vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.