On 2025-04-28, CISA added CVE-2025-1976 (Broadcom Brocade Fabric OS) to its Known Exploited Vulnerabilities (KEV) catalog [2]. The vulnerability is listed in the catalog as "Broadcom Brocade Fabric OS Code Injection Vulnerability" [2]. CISA requires applying mitigations in accordance with vendor instructions; see the full text below for specific requirements [2].
Backfill: this event became public on Apr 28, 2025 and we added it on Nov 10, 2026. It is not a new event.
CISA Adds Broadcom Brocade Fabric OS Vulnerability CVE-2025-1976 to Known Exploited Vulnerabilities Catalog
1 min read
- Disclosed
- Apr 28, 2025
- Published
- Nov 10, 2026
- Last updated
- Nov 8, 2026
- CVSS basis
- Our assessment
- 0.7%, higher than 53% of CVEs
- Exploitation and patch status
- ExploitedKEV
- Attack vector
- Vulnerability status
- Actor type
- Motivation
On this page
30-second summary
What happened
Who is affected
Industries mainly affected: Government, Cross-industry
What to do nowOur advice
CISA requires applying mitigations in accordance with vendor instructions; see the full text for specific requirements [2].
Timeline
Technical details
CISA KEV Listing
On 2025-04-28, CISA added CVE-2025-1976 to the Known Exploited Vulnerabilities () catalog for Broadcom Brocade Fabric OS [2].
Original Technical Description
Broadcom Brocade Fabric OS contains a code injection vulnerability that allows a local user with administrative privileges to execute arbitrary code with full root privileges. [2]
Official Requirements
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. [2]
Individual Vulnerability Record
The U.S. National Vulnerability Database (NVD) provides an independent vulnerability record and description for CVE-2025-1976 [1].
References
Official / primary3
- [1]
“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.”
- [2]
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