{"id":"CVE-2026-63020","title":"A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages \n\n\n\n\n\nImpact:\n\n\nAn attacker may trick authenticated BIG-IP users \ninto accessing malicious links and reflect a …","summary":"A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages \n\n\n\n\n\nImpact:\n\n\nAn attacker may trick authenticated BIG-IP users \ninto accessing malicious links and reflect a …","severity":"low","cvss":3.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","cwe":["CWE-451"],"vendor":"f5","product":"big-ip_access_policy_manager","affected":["big-ip_access_policy_manager >= 17.1.0, <= 17.1.3","big-ip_access_policy_manager >= 17.5.0, <= 17.5.1","big-ip_advanced_firewall_manager >= 17.1.0, <= 17.1.3","big-ip_advanced_firewall_manager >= 17.5.0, <= 17.5.1","big-ip_advanced_web_application_firewall >= 17.1.0, <= 17.1.3","big-ip_advanced_web_application_firewall >= 17.5.0, <= 17.5.1","big-ip_analytics >= 17.1.0, <= 17.1.3","big-ip_analytics >= 17.5.0, <= 17.5.1","big-ip_application_acceleration_manager >= 17.1.0, <= 17.1.3","big-ip_application_acceleration_manager >= 17.5.0, <= 17.5.1","big-ip_application_security_manager >= 17.1.0, <= 17.1.3","big-ip_application_security_manager >= 17.5.0, <= 17.5.1","big-ip_application_visibility_and_reporting >= 17.1.0, <= 17.1.3","big-ip_application_visibility_and_reporting >= 17.5.0, <= 17.5.1","big-ip_automation_toolchain >= 17.1.0, <= 17.1.3","big-ip_automation_toolchain >= 17.5.0, <= 17.5.1","big-ip_carrier-grade_nat >= 17.1.0, <= 17.1.3","big-ip_carrier-grade_nat >= 17.5.0, <= 17.5.1","big-ip_container_ingress_services >= 17.1.0, <= 17.1.3","big-ip_container_ingress_services >= 17.5.0, <= 17.5.1","big-ip_ddos_hybrid_defender >= 17.1.0, <= 17.1.3","big-ip_ddos_hybrid_defender >= 17.5.0, <= 17.5.1","big-ip_domain_name_system >= 17.1.0, <= 17.1.3","big-ip_domain_name_system >= 17.5.0, <= 17.5.1","big-ip_edge_gateway >= 17.1.0, <= 17.1.3","big-ip_edge_gateway >= 17.5.0, <= 17.5.1","big-ip_fraud_protection_service >= 17.1.0, <= 17.1.3","big-ip_fraud_protection_service >= 17.5.0, <= 17.5.1","big-ip_global_traffic_manager >= 17.1.0, <= 17.1.3","big-ip_global_traffic_manager >= 17.5.0, <= 17.5.1","big-ip_link_controller >= 17.1.0, <= 17.1.3","big-ip_link_controller >= 17.5.0, <= 17.5.1","big-ip_local_traffic_manager >= 17.1.0, <= 17.1.3","big-ip_local_traffic_manager >= 17.5.0, <= 17.5.1","big-ip_policy_enforcement_manager >= 17.1.0, <= 17.1.3","big-ip_policy_enforcement_manager >= 17.5.0, <= 17.5.1","big-ip_ssl_orchestrator >= 17.1.0, <= 17.1.3","big-ip_ssl_orchestrator >= 17.5.0, <= 17.5.1","big-ip_webaccelerator >= 17.1.0, <= 17.1.3","big-ip_webaccelerator >= 17.5.0, <= 17.5.1","big-ip_websafe >= 17.1.0, <= 17.1.3","big-ip_websafe >= 17.5.0, <= 17.5.1","big-ip_access_policy_manager >= 21.0.0, <= 21.1.0","big-ip_advanced_firewall_manager >= 21.0.0, <= 21.1.0","big-ip_advanced_web_application_firewall >= 21.0.0, <= 21.1.0","big-ip_analytics >= 21.0.0, <= 21.1.0","big-ip_application_acceleration_manager >= 21.0.0, <= 21.1.0","big-ip_application_security_manager >= 21.0.0, <= 21.1.0","big-ip_application_visibility_and_reporting >= 21.0.0, <= 21.1.0","big-ip_automation_toolchain >= 21.0.0, <= 21.1.0","big-ip_carrier-grade_nat >= 21.0.0, <= 21.1.0","big-ip_container_ingress_services >= 21.0.0, <= 21.1.0","big-ip_ddos_hybrid_defender >= 21.0.0, <= 21.1.0","big-ip_domain_name_system >= 21.0.0, <= 21.1.0","big-ip_edge_gateway >= 21.0.0, <= 21.1.0","big-ip_fraud_protection_service >= 21.0.0, <= 21.1.0","big-ip_global_traffic_manager >= 21.0.0, <= 21.1.0","big-ip_link_controller >= 21.0.0, <= 21.1.0","big-ip_local_traffic_manager >= 21.0.0, <= 21.1.0","big-ip_policy_enforcement_manager >= 21.0.0, <= 21.1.0","big-ip_ssl_orchestrator >= 21.0.0, <= 21.1.0","big-ip_webaccelerator >= 21.0.0, <= 21.1.0","big-ip_websafe >= 21.0.0, <= 21.1.0"],"published":"2026-09-02","updated":"2026-09-15","sourceUpdated":"2026-09-15T18:19:18.243","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63020","references":[{"url":"https://my.f5.com/manage/s/article/K000161728","label":"f5sirt@f5.com"}],"tags":["nvd"],"epss":0.00186,"epssPercentile":0.08443,"ingestedAt":"2026-09-15T18:41:59.123Z","slug":"CVE-2026-63020","body":"## Overview\n\nA vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages \n\n\n\n\n\nImpact:\n\n\nAn attacker may trick authenticated BIG-IP users \ninto accessing malicious links and reflect a spoofed error message in \nthe victim's BIG-IP Configuration utility web browser session. This is a\n control plane issue; there is no data plane exposure.\n\n\n\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.\n\n## Affected\n\n- `big-ip_access_policy_manager >= 17.1.0, <= 17.1.3`\n- `big-ip_access_policy_manager >= 17.5.0, <= 17.5.1`\n- `big-ip_advanced_firewall_manager >= 17.1.0, <= 17.1.3`\n- `big-ip_advanced_firewall_manager >= 17.5.0, <= 17.5.1`\n- `big-ip_advanced_web_application_firewall >= 17.1.0, <= 17.1.3`\n- `big-ip_advanced_web_application_firewall >= 17.5.0, <= 17.5.1`\n- `big-ip_analytics >= 17.1.0, <= 17.1.3`\n- `big-ip_analytics >= 17.5.0, <= 17.5.1`\n- `big-ip_application_acceleration_manager >= 17.1.0, <= 17.1.3`\n- `big-ip_application_acceleration_manager >= 17.5.0, <= 17.5.1`\n- `big-ip_application_security_manager >= 17.1.0, <= 17.1.3`\n- `big-ip_application_security_manager >= 17.5.0, <= 17.5.1`\n- `big-ip_application_visibility_and_reporting >= 17.1.0, <= 17.1.3`\n- `big-ip_application_visibility_and_reporting >= 17.5.0, <= 17.5.1`\n- `big-ip_automation_toolchain >= 17.1.0, <= 17.1.3`\n- `big-ip_automation_toolchain >= 17.5.0, <= 17.5.1`\n- `big-ip_carrier-grade_nat >= 17.1.0, <= 17.1.3`\n- `big-ip_carrier-grade_nat >= 17.5.0, <= 17.5.1`\n- `big-ip_container_ingress_services >= 17.1.0, <= 17.1.3`\n- `big-ip_container_ingress_services >= 17.5.0, <= 17.5.1`\n- `big-ip_ddos_hybrid_defender >= 17.1.0, <= 17.1.3`\n- `big-ip_ddos_hybrid_defender >= 17.5.0, <= 17.5.1`\n- `big-ip_domain_name_system >= 17.1.0, <= 17.1.3`\n- `big-ip_domain_name_system >= 17.5.0, <= 17.5.1`\n- `big-ip_edge_gateway >= 17.1.0, <= 17.1.3`\n- `big-ip_edge_gateway >= 17.5.0, <= 17.5.1`\n- `big-ip_fraud_protection_service >= 17.1.0, <= 17.1.3`\n- `big-ip_fraud_protection_service >= 17.5.0, <= 17.5.1`\n- `big-ip_global_traffic_manager >= 17.1.0, <= 17.1.3`\n- `big-ip_global_traffic_manager >= 17.5.0, <= 17.5.1`\n- `big-ip_link_controller >= 17.1.0, <= 17.1.3`\n- `big-ip_link_controller >= 17.5.0, <= 17.5.1`\n- `big-ip_local_traffic_manager >= 17.1.0, <= 17.1.3`\n- `big-ip_local_traffic_manager >= 17.5.0, <= 17.5.1`\n- `big-ip_policy_enforcement_manager >= 17.1.0, <= 17.1.3`\n- `big-ip_policy_enforcement_manager >= 17.5.0, <= 17.5.1`\n- `big-ip_ssl_orchestrator >= 17.1.0, <= 17.1.3`\n- `big-ip_ssl_orchestrator >= 17.5.0, <= 17.5.1`\n- `big-ip_webaccelerator >= 17.1.0, <= 17.1.3`\n- `big-ip_webaccelerator >= 17.5.0, <= 17.5.1`\n- `big-ip_websafe >= 17.1.0, <= 17.1.3`\n- `big-ip_websafe >= 17.5.0, <= 17.5.1`\n- `big-ip_access_policy_manager >= 21.0.0, <= 21.1.0`\n- `big-ip_advanced_firewall_manager >= 21.0.0, <= 21.1.0`\n- `big-ip_advanced_web_application_firewall >= 21.0.0, <= 21.1.0`\n- `big-ip_analytics >= 21.0.0, <= 21.1.0`\n- `big-ip_application_acceleration_manager >= 21.0.0, <= 21.1.0`\n- `big-ip_application_security_manager >= 21.0.0, <= 21.1.0`\n- `big-ip_application_visibility_and_reporting >= 21.0.0, <= 21.1.0`\n- `big-ip_automation_toolchain >= 21.0.0, <= 21.1.0`\n- `big-ip_carrier-grade_nat >= 21.0.0, <= 21.1.0`\n- `big-ip_container_ingress_services >= 21.0.0, <= 21.1.0`\n- `big-ip_ddos_hybrid_defender >= 21.0.0, <= 21.1.0`\n- `big-ip_domain_name_system >= 21.0.0, <= 21.1.0`\n- `big-ip_edge_gateway >= 21.0.0, <= 21.1.0`\n- `big-ip_fraud_protection_service >= 21.0.0, <= 21.1.0`\n- `big-ip_global_traffic_manager >= 21.0.0, <= 21.1.0`\n- `big-ip_link_controller >= 21.0.0, <= 21.1.0`\n- `big-ip_local_traffic_manager >= 21.0.0, <= 21.1.0`\n- `big-ip_policy_enforcement_manager >= 21.0.0, <= 21.1.0`\n- `big-ip_ssl_orchestrator >= 21.0.0, <= 21.1.0`\n- `big-ip_webaccelerator >= 21.0.0, <= 21.1.0`\n- `big-ip_websafe >= 21.0.0, <= 21.1.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}