Broadcom Brocade Fabric OS Code Injection Vulnerability

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.

CheckOps priority index

4.7/10 Patch within 7 days

Severity8.6

Probability0.1

Exploitation2/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 0.69% higher than 52.8% of CVEs

CVSS 4.0 8.6 AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/

Exploited for 554 days 28 Apr 2025

CISA due date 19 May 2025 for US federal agencies

Exploitation probability EPSS · FIRST

EPSS probability (%)Percentile among all CVEs

Exploitation signals 2 / 5

KEV catalog (CISA)28 Apr 2025
Exploited in EUVD (ENISA)28 Apr 2025
Used by ransomwareno
EPSS above 10 %0.69%
No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Affected products

Fabric OSBrocade Fabric OS

Affected versions

Fabric OS versions 9.1.0 through 9.1.1d6

Weaknesses (CWE)

CWE-94

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

24 Apr 2025
Published
28 Apr 2025
Exploitation reported (ENISA)
28 Apr 2025
Added to the KEV catalog
19 May 2025
CISA remediation due date

References

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