CVE-2026-87683 Brocade Fabric OS - Buffer Overflow

Brocade Fabric OS < 10.0.1 contains stack-based buffer overflow vulnerabilities caused by improper validation of array counts and string lengths in REST API management component, letting authenticated attackers cause denial-of-service or execute arbitrary code, exploit requires REST API access.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.48% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Remote Code Execution, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
8 October 2026
Updated
15 October 2026
Weakness
CWE-121

Vendor fix

Update to version 10.0.1 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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