CVE-2026-63020BIG-IP Configuration utility vulnerability
Updated under an hour ago ()
Does this affect you?
It affects F5 BIG-IP and 21 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 3.1 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-451
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- f5
- NVD analysis
- Analyzed
- Record last updated
- Sep 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
F5 BIG-IP f5:big_ip (from the name) | from 21.1.0 before 21.1.0.1; from 21.0.0 before 21.0.0.3; from 17.5.0 before 17.5.1.8; from 17.1.0 before 17.1.3.4 | CNA record |
f5 big-ip_access_policy_manager f5:big-ip_access_policy_manager | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_advanced_firewall_manager f5:big-ip_advanced_firewall_manager | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_advanced_web_application_firewall f5:big-ip_advanced_web_application_firewall | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_analytics f5:big-ip_analytics | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_application_acceleration_manager f5:big-ip_application_acceleration_manager | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_application_security_manager f5:big-ip_application_security_manager | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_application_visibility_and_reporting f5:big-ip_application_visibility_and_reporting | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_automation_toolchain f5:big-ip_automation_toolchain | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_carrier-grade_nat f5:big-ip_carrier-grade_nat | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_container_ingress_services f5:big-ip_container_ingress_services | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_ddos_hybrid_defender f5:big-ip_ddos_hybrid_defender | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_domain_name_system f5:big-ip_domain_name_system | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_edge_gateway f5:big-ip_edge_gateway | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_fraud_protection_service f5:big-ip_fraud_protection_service | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_global_traffic_manager f5:big-ip_global_traffic_manager | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_link_controller f5:big-ip_link_controller | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_local_traffic_manager f5:big-ip_local_traffic_manager | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_policy_enforcement_manager f5:big-ip_policy_enforcement_manager | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_ssl_orchestrator f5:big-ip_ssl_orchestrator | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_webaccelerator f5:big-ip_webaccelerator | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
f5 big-ip_websafe f5:big-ip_websafe | from 17.1.0 through 17.1.3; from 17.5.0 through 17.5.1; from 21.0.0 through 21.1.0 | NVD |
References
- https://my.f5.com/manage/s/article/K000161728vendor-advisory, mitigation
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.