CVSS 4.0
2.3 lowCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:NCVE-2026-63020
Low (2.3) in f5. EPSS 0.2% chance of exploitation in the next 30 days.
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.
Severity
CVSS 3.1
3.1 lowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-31)
- CWE
- CWE-451
- Published
- Modified
- Record from
- the NVD, synced
Affected
- f5:big-ip_access_policy_manager
- f5:big-ip_advanced_firewall_manager
- f5:big-ip_advanced_web_application_firewall
- f5:big-ip_analytics
- f5:big-ip_application_acceleration_manager
- f5:big-ip_application_security_manager
- f5:big-ip_application_visibility_and_reporting
- f5:big-ip_automation_toolchain
- f5:big-ip_carrier-grade_nat
- f5:big-ip_container_ingress_services
- f5:big-ip_ddos_hybrid_defender
- f5:big-ip_domain_name_system
- f5:big-ip_edge_gateway
- f5:big-ip_fraud_protection_service
- f5:big-ip_global_traffic_manager
- f5:big-ip_link_controller
- f5:big-ip_local_traffic_manager
- f5:big-ip_policy_enforcement_manager
- f5:big-ip_ssl_orchestrator
- f5:big-ip_webaccelerator
- f5:big-ip_websafe