Answer in brief
CVE-2026-63020 records a Low severity (CVSS 3.1) vulnerability in BIG-IP Configuration utility vulnerability. The current sources do not 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.
CVSS is 3.1. 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). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| F5/BIG-IPgeneric | >=21.1.0 <21.1.0.1 || >=21.0.0 <21.0.0.3 || >=17.5.0 <17.5.1.8 || >=17.1.0 <17.1.3.4 | 21.1.0.1, 21.0.0.3, 17.5.1.8, 17.1.3.4 |
Published upstream
Sep 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 2, 2026
A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages Impact: An attacker may trick authenticated BIG-IP users into accessing malicious links and reflect a spoofed error message in the victim's BIG-IP Configuration utility web browser session. This is a control plane issue; there is no data plane exposure. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Quoted source text, attributed separately from HOL analysis.