{"id":"CVE-2026-63020","aliases":["EUVD-2026-70135","GHSA-7f8w-84hq-vpww"],"status":"published","title":"BIG-IP Configuration utility vulnerability","description":"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 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.","severity":{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0023,"percentile":0.13962,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-451"],"published":"2026-09-02T15:40:53Z","modified":"2026-09-15T18:19:18Z","products":[{"vendor":"f5","product":"big-ip"},{"vendor":"f5","product":"big-ip_access_policy_manager"},{"vendor":"f5","product":"big-ip_advanced_firewall_manager"},{"vendor":"f5","product":"big-ip_advanced_web_application_firewall"},{"vendor":"f5","product":"big-ip_analytics"},{"vendor":"f5","product":"big-ip_application_acceleration_manager"},{"vendor":"f5","product":"big-ip_application_security_manager"},{"vendor":"f5","product":"big-ip_application_visibility_and_reporting"},{"vendor":"f5","product":"big-ip_automation_toolchain"},{"vendor":"f5","product":"big-ip_carrier-grade_nat"},{"vendor":"f5","product":"big-ip_container_ingress_services"},{"vendor":"f5","product":"big-ip_ddos_hybrid_defender"},{"vendor":"f5","product":"big-ip_domain_name_system"},{"vendor":"f5","product":"big-ip_edge_gateway"},{"vendor":"f5","product":"big-ip_fraud_protection_service"},{"vendor":"f5","product":"big-ip_global_traffic_manager"},{"vendor":"f5","product":"big-ip_link_controller"},{"vendor":"f5","product":"big-ip_local_traffic_manager"},{"vendor":"f5","product":"big-ip_policy_enforcement_manager"},{"vendor":"f5","product":"big-ip_ssl_orchestrator"},{"vendor":"f5","product":"big-ip_webaccelerator"},{"vendor":"f5","product":"big-ip_websafe"}],"references":[{"url":"https://my.f5.com/manage/s/article/K000161728","tags":["vendor-advisory","Mitigation","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63020"},{"url":"https://github.com/advisories/GHSA-7f8w-84hq-vpww"}],"sources":{"cve":[{"id":"CVE-2026-63020","title":"BIG-IP Configuration utility vulnerability","description":"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 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.","status":"published","published":"2026-09-02T15:40:53.437Z","modified":"2026-09-02T17:55:45.119Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low","assessor":"cna"},{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-451"],"updated_at":"2026-11-02T14:19:56.284359Z"}],"euvd":[{"id":"EUVD-2026-70135","description":"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 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.","status":"published","published":"2026-09-02T15:40:53Z","modified":"2026-09-02T17:55:45Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"low"}],"updated_at":"2026-11-02T18:01:14.689075Z"}],"ghsa":[{"id":"GHSA-7f8w-84hq-vpww","title":"A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an...","description":"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 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.","status":"published","published":"2026-09-02T18:32:11Z","modified":"2026-09-02T18:32:11Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"},{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-451"],"updated_at":"2026-11-02T15:11:17.943368Z"}],"nvd":[{"id":"CVE-2026-63020","description":"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 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.","status":"published","published":"2026-09-02T16:17:18.4Z","modified":"2026-09-15T18:19:18.243Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-451"],"updated_at":"2026-11-02T14:12:43.399612Z"}]}}