Broadcom Brocade Fabric OS Code Injection Vulnerability
Brocade — Fabric OS
Brocade Fabric OS versions starting with 9.1.0 have root access removed, however, a local user with admin privilege can potentially execute arbitrary code with full root privileges on Fabric OS versions 9.1.0 through 9.1.1d6.
6.7
0.7%
Vector breakdown
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Published
- Apr 24, 2025
- Modified
- Jun 17, 2026
- Added to KEV
- Apr 28, 2025
- Federal patch due
- May 19, 2025
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2025-1976, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2025-1976 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
How this class of flaw gets exploited
Frequently asked questions
What is CVE-2025-1976?
Brocade Fabric OS versions starting with 9.1.0 have root access removed, however, a local user with admin privilege can potentially execute arbitrary code with full root privileges on Fabric OS versions 9.1.0 through 9.1.1d6.
How severe is CVE-2025-1976?
CVE-2025-1976 has a CVSS base score of 6.7 out of 10 (CVSS 3.1).
Is CVE-2025-1976 actively exploited in the wild?
Yes. CVE-2025-1976 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Apr 28, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-1976?
0.7% - meaning FIRST.org's EPSS model estimates a 0.7% probability this vulnerability will be exploited in the wild within 30 days (51% percentile among all scored CVEs).
What type of vulnerability is CVE-2025-1976?
CVE-2025-1976 is classified under CWE-94, CWE-78 (CWE-94 Improper Control of Generation of Code ('Code Injection')).
Cross-checked against
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