CVE-2026-87676: CWE-121: Stack-based Buffer Overflow in Brocade Fabric OS
Description
A stack-based buffer overflow vulnerability exists in the security library component of Brocade Fabric OS versions before 10.0.1. When parsing uploaded X.509 PEM certificates for management display, the system improperly validates the length of the Authority Key Identifier (AKI) extension before copying string tokens into an internal memory buffer. An authenticated user with administrative privileges to import custom certificates can supply a certificate containing an intentionally oversized AKI extension. When the system processes or renders the certificate attributes, this can trigger a stack memory corruption leading to a denial-of-service (DoS) condition by crashing the management daemon.
CVSS v4.0
Score 6.9medium
Affected software
Brocade
Fabric OS
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- brocade
- Date Reserved
- 2026-09-08T22:51:12.167Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac704982cdf04f656d7a12d
Added to database: 10/08/2026, 02:48:56 UTC
Last updated: 10/08/2026, 02:48:56 UTC
Views: 1
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