Root Privilege Escalation in Broadcom Brocade Fabric OS

Historical catalog analysis: CISA added this entry on April 28, 2025. The entry reflects catalog information retrieved on August 31, 2026, not a snapshot archived on the inclusion date. Check current vendor guidance before acting.

What the vulnerability is

CVE-2025-1976 is a code injection vulnerability (CWE-94) identified in Broadcom Brocade Fabric OS. The flaw allows a local user who already possesses administrative privileges to execute arbitrary code with full root privileges on the system. This represents a privilege escalation path where an account with high-level access can bypass remaining restrictions to gain total control over the operating system.

Exposure and applicability

This vulnerability is applicable to healthcare organizations utilizing Broadcom Brocade Fabric OS to manage their Storage Area Networks (SANs). In clinical environments, SANs often serve as the foundational infrastructure for hosting large-scale electronic Protected Health Information (ePHI) databases, Electronic Health Record (EHR) systems, and medical imaging archives (PACS).

Because the vulnerability requires local administrative privileges, the primary risk is centered on internal threats or scenarios where an attacker has already compromised a privileged administrative account. If exploited, the ability to execute code at the root level could jeopardize the integrity and availability of the storage layers supporting patient care operations.

Remediation priorities

Based on our analysis, healthcare IT and security leaders should prioritize the following actions to reduce the likelihood of exploitation:

1. Inventory and Patching: Identify all switches running Brocade Fabric OS and apply vendor-supplied mitigations or updates. This is the primary method for addressing the underlying code injection flaw.
2. Privileged Access Review: Audit all accounts with administrative privileges to the SAN infrastructure. Reducing the number of users with these permissions limits the pool of local users who could potentially trigger this vulnerability.
3. Administrative Session Monitoring: Enhance logging and alerting for administrative sessions on storage management interfaces to detect unusual activity that may precede a privilege escalation attempt.

How to validate remediation

To verify that exposure has been reduced, organizations should employ the following methods:

• Version Verification: Confirm through system logs or management consoles that the Fabric OS version matches the patched or mitigated version specified by Broadcom.
• Access Audit Logs: Review current administrative access lists to ensure only essential personnel retain the privileges required to interact with the affected OS components.

Note: Security teams should coordinate any validation efforts with clinical engineering and vendor guidance to avoid disrupting active storage traffic critical to patient care.

Limits and open questions

It remains unknown whether this vulnerability has been utilized in known ransomware campaigns. Additionally, while CISA has added this to the Known Exploited Vulnerabilities catalog, the specific entry path for any observed exploitations is not detailed in the available data.

Applying patches could reduce the likelihood of exploitation but does not eliminate all residual risks associated with privileged account compromise. Organizations should recognize that version verification alone does not guarantee total security if other configuration weaknesses exist.

Source and editorial note

CVE-2025-1976: Broadcom Brocade Fabric OS Code Injection Vulnerability · Source date: April 28, 2025 · Retrieved August 31, 2026.

Material facts are tied to the cited primary source. Recommendations are independent defensive analysis unless attributed to the source. Confirm consequential decisions against current authoritative guidance.

Archive date: May 01, 2025. The displayed post date is assigned three days after the source date to organize this retrospective archive; it does not mean this site published the analysis then. First published by this site: October 13, 2026 at 01:03 UTC.

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