CVE-2026-87668 Memory corruption in Fabric OS
An authenticated administrator can cause a denial of service via a stack-based buffer overflow in the diagnostic utility of Brocade Fabric OS.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-87668?
CVE-2026-87668 is a medium-severity memory corruption vulnerability in Broadcom Fabric Operating System, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A stack-based buffer overflow vulnerability exists in the diagnostic execution utility of Brocade Fabric OS versions before 10.0.1. When processing command arguments for diagnostic operations, the utility tokenizes user-supplied input into an internal argument array without enforcing boundary checks on the maximum array capacity. An authenticated user with administrative access can exploit this vulnerability by supplying a crafted diagnostic command string containing an excessive number of tokenized arguments. This leads to a memory overwrite resulting in a denial of service (process crash).
Weakness: CWE-121
Which versions are affected by CVE-2026-87668?
It affects 1 product.
Products include Broadcom Fabric Operating System.
How do I fix CVE-2026-87668?
No fix has been published for CVE-2026-87668 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-87668 being exploited?
There is no known exploitation of CVE-2026-87668 in the wild and no public exploit code.
Other vulnerabilities in Broadcom Fabric Operating System
Sources
Also known as GHSA-ph5j-f53x-2pfj.