CVE-2023-31431: A buffer overflow vulnerability in “diagstatus” command

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-08-02 · updated 2026-06-17
Weakness: CWE-120

Description

A buffer overflow vulnerability in “diagstatus” command in Brocade Fabric OS before Brocade Fabric v9.2.0 and v9.1.1c could allow an authenticated user to crash the Brocade Fabric OS switch leading to a denial of service.

Affected products

Broadcom Brocade Fabric Operating System: before 9.1.1c; 9.2.0 — fixed in 9.1.1c

How to fix

Upgrade to a fixed version: Broadcom Brocade Fabric Operating System 9.1.1c. Check the vendor advisory for mitigations.

References

https://security.netapp.com/advisory/ntap-20230908-0007/
https://support.broadcom.com/external/content/SecurityAdvisories/0/22384
https://security.netapp.com/advisory/ntap-20230908-0007/
https://support.broadcom.com/external/content/SecurityAdvisories/0/22384

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