Security readout for executives and security teams
Plain-English summary
A privileged local admin on affected Brocade Fabric OS switches may be able to run arbitrary code as root. That matters because Fabric OS commonly supports storage networking infrastructure, where root-level compromise can affect confidentiality, integrity, and availability of connected operations.
Executive priority
Handle this as urgent for environments running affected Fabric OS versions, especially regulated or availability-sensitive storage networks. The issue requires admin-level local access, but CISA KEV status raises priority because exploitation is known, not merely theoretical.
Technical view
CVE-2025-1976 is a CWE-94 code injection issue in Brocade Fabric OS 9.1.0 through 9.1.1d6. Although root access was removed starting in 9.1.0, an authenticated local admin may gain full root privileges. CVSS v4.0 is 8.6 high.
Likely exposure
Exposure is limited to Brocade Fabric OS versions 9.1.0 through 9.1.1d6. Organizations without those versions are listed as unaffected by default in the supplied CVE data. Confirm actual switch firmware versions rather than relying on asset labels.
Exploitation context
CISA lists CVE-2025-1976 in its Known Exploited Vulnerabilities catalog, so exploitation has been observed. The provided sources do not describe exploit methods, scale, affected campaigns, or whether exploitation is remote beyond the CVSS adjacent-vector and local-admin prerequisite.
Researcher notes
The source bundle confirms affected versions, CWE-94, CVSS 8.6, and KEV status. It does not provide patch version details, indicators of compromise, proof-of-concept details, or campaign attribution. Validation should focus on version confirmation, admin-path exposure, and vendor advisory alignment.
Mitigation direction
- Check Broadcom's advisory for fixed versions and vendor-specific remediation.
- Prioritize upgrade or vendor-directed mitigation for Fabric OS 9.1.0 through 9.1.1d6.
- Restrict and review admin access to affected Fabric OS devices.
- Monitor administrative activity and configuration changes on affected switches.
- Treat suspected compromise as privileged infrastructure access until disproven.
Validation and detection
- Inventory Brocade Fabric OS switch versions across storage-network environments.
- Confirm whether any device runs 9.1.0 through 9.1.1d6.
- Review local admin accounts and recent privilege-sensitive activity.
- Check Broadcom advisory status before approving remediation plans.
- Track CISA KEV handling deadlines if subject to BOD 22-01 requirements.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-1976 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.6 (4.0)
- Known Exploited
- Yes
- Published
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
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.6HighVector: 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
Source materials
- CVE List V5 sourceCVE List V5
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/25602CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-1976CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Control of Generation of Code ('Code Injection')
Improper Control of Generation of Code ('Code Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.