Answer in brief
CVE-2025-1976 records a High severity vulnerability in Code injection exposure in Fabric OS 9.1.0 through 9.1.1d6. The current sources mark it as known exploited. The current feed maps Brocade/Fabric OS (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Brocade/Fabric OS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Brocade/Fabric OSgeneric | Fabric OS versions 9.1.0 through 9.1.1d6 | Not reported |
Published upstream
Apr 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Feb 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Apr 28, 2025
Evidence: source:kev:kev:kev:recordBrocade 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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-1976 records a High severity vulnerability in Code injection exposure in Fabric OS 9.1.0 through 9.1.1d6. The current sources mark it as known exploited. The current feed maps Brocade/Fabric OS (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Brocade/Fabric OS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Brocade/Fabric OSgeneric | Fabric OS versions 9.1.0 through 9.1.1d6 | Not reported |
Published upstream
Apr 24, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Feb 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Apr 28, 2025
Evidence: source:kev:kev:kev:recordBrocade 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.
Quoted source text, attributed separately from HOL analysis.