Answer in brief
CVE-2026-42406 records a High severity (CVSS 8.7) vulnerability in BIG-IP and BIG-IQ privilege escalation vulnerability. The current sources do not mark it as known exploited. The current feed maps F5/BIG-IP (generic), F5/BIG-IQ (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.7. The current sources do not mark it as known exploited. 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), F5/BIG-IQ (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| F5/BIG-IPgeneric | >=21.0.0 <21.0.0.2 || >=17.5.0 <17.5.1.6 || >=17.1.0 <17.1.3.2 || >=16.1.0 <* | 21.0.0.2, 17.5.1.6, 17.1.3.2, * |
| F5/BIG-IQgeneric | >=8.4.0 <* | * |
Published upstream
May 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 23, 2026
A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at least the Certificate Manager role can modify configuration objects that allow running arbitrary commands. 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-2026-42406 records a High severity (CVSS 8.7) vulnerability in BIG-IP and BIG-IQ privilege escalation vulnerability. The current sources do not mark it as known exploited. The current feed maps F5/BIG-IP (generic), F5/BIG-IQ (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.7. The current sources do not mark it as known exploited. 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), F5/BIG-IQ (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| F5/BIG-IPgeneric | >=21.0.0 <21.0.0.2 || >=17.5.0 <17.5.1.6 || >=17.1.0 <17.1.3.2 || >=16.1.0 <* | 21.0.0.2, 17.5.1.6, 17.1.3.2, * |
| F5/BIG-IQgeneric | >=8.4.0 <* | * |
Published upstream
May 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 23, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 23, 2026
A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at least the Certificate Manager role can modify configuration objects that allow running arbitrary commands. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Quoted source text, attributed separately from HOL analysis.