CISA KEV · Known exploitedHigh

CVE-2025-1976

Broadcom 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.

CVSS
8.6
EPSS
0.78%
52.5% percentile
CISA KEV
Listed
Published
2025.04.24
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability0.78%
Technical severityCVSS 8.6

Vulnerability overview

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.

Affected product and versions

Product
Broadcom Brocade Fabric OS
Affected versions
Fabric OS versions 9.1.0 through 9.1.1d6, >= 9.1.0 < 9.1.1d7
Fixed versions
9.1.1d7

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
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.

Due date: 2025.05.19
  1. 1
    Identify

    Confirm that Broadcom Brocade Fabric OS and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE
CWE-78, CWE-94
KEV added
2025.04.28
Ransomware use
미확인
CVE-2025-1976 — Broadcom Brocade Fabric OS | SECUFOCUS NOW