CVE-2026-87424 Brocade ASCG - Authentication Bypass

Brocade ASCG < 3.5.0 contains a broken authentication caused by use of a hard coded cryptographic key in SupportLink API authentication, letting attackers bypass authentication across deployments, exploit requires no special conditions.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
8 October 2026
Updated
15 October 2026
Weakness
CWE-321

Vendor fix

Upgrade to version 3.5.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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