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Exploited vulnerability · CISA KEV

Is CVE-2025-1976 exploited? Yes: in CISA KEV since 28 Apr 2025

Gociux · Broadcom Brocade Fabric OS · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2025-1976, Broadcom Brocade Fabric OS Code Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 28 Apr 2025, 4 days after it was published. It affects Broadcom Brocade Fabric OS. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 28 Apr 2025
ransomwareNot knownno confirmed use
EPSSbelow top 10%lower predicted activity right now (it is still confirmed exploited)
severity8.6CVSS 4.0 · high
US federal due19 May 2025BOD 22-01 deadline

What it is

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.

VendorBroadcom (6 exploited CVEs in KEV)
ProductBrocade Fabric OS
VulnerabilityBroadcom Brocade Fabric OS Code Injection Vulnerability
WeaknessCWE-94
Published24 Apr 2025
Added to KEV28 Apr 2025
Reported by (CNA)brocade

What to do

  1. Check whether you run it. Look for Brocade Fabric OS in your asset inventory, including appliances and cloud images. Stack check lists every exploited Broadcom CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 24 Apr 2025.
  4. Get told next time. Email alerts when CISA adds a CVE for Broadcom.

References

Questions

Is CVE-2025-1976 being exploited?

Yes. CISA added CVE-2025-1976 to the Known Exploited Vulnerabilities catalog on 28 Apr 2025, which means there is reliable evidence of exploitation in the wild.

Is CVE-2025-1976 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2025-1976?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Broadcom's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Brocade Fabric OS and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in April 2025 · Broadcom scorecard · act-now radar.

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