Answer in brief
CVE-2025-53521 records a High severity vulnerability in BigIP APM Vulnerability. The current sources mark it as known exploited. The current feed maps F5/BIG-IP (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 F5/BIG-IP (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| F5/BIG-IPgeneric | >=17.5.0 <17.5.1.3 || >=17.1.0 <17.1.3 || >=16.1.0 <16.1.6.1 || >=15.1.0 <15.1.10.8 | 17.5.1.3, 17.1.3, 16.1.6.1, 15.1.10.8 |
Published upstream
Oct 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Mar 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Mar 27, 2026
Evidence: source:kev:kev:kev:recordWhen a BIG-IP APM access policy is configured on a virtual server, specific malicious traffic can lead to Remote Code Execution (RCE). Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-53521 records a High severity vulnerability in BigIP APM Vulnerability. The current sources mark it as known exploited. The current feed maps F5/BIG-IP (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 F5/BIG-IP (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| F5/BIG-IPgeneric | >=17.5.0 <17.5.1.3 || >=17.1.0 <17.1.3 || >=16.1.0 <16.1.6.1 || >=15.1.0 <15.1.10.8 | 17.5.1.3, 17.1.3, 16.1.6.1, 15.1.10.8 |
Published upstream
Oct 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Mar 31, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Mar 27, 2026
Evidence: source:kev:kev:kev:recordWhen a BIG-IP APM access policy is configured on a virtual server, specific malicious traffic can lead to Remote Code Execution (RCE). Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Quoted source text, attributed separately from HOL analysis.