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A successful exploit may allow the attacker to cross a security boundary.\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00288,"percentile":0.21481,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-05-13T14:12:32Z","modified":"2026-10-26T14:10:00Z","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/K000158971","tags":["vendor-advisory","patch","Mitigation","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42919"},{"url":"https://github.com/advisories/GHSA-w3xh-p84j-v7qw"}],"sources":{"cve":[{"id":"CVE-2026-42919","title":"F5 BIG-IP Appliance Mode Vulnerability","description":"A vulnerability exists in BIG-IP systems that may allow an authenticated attacker with administrative access to escalate their privileges. 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A successful exploit may allow the attacker to cross a security boundary.\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","status":"published","published":"2026-05-13T18:30:56Z","modified":"2026-05-13T18:31:06Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/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":"high"},{"version":"3.1","score":6.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H","level":"medium"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:08:07.741271Z"}],"nvd":[{"id":"CVE-2026-42919","description":"A vulnerability exists in BIG-IP systems that may allow an authenticated attacker with administrative access to escalate their privileges. 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