{"basis":"claimed","id":"CVE-2026-94127","name":"F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability","vendorProject":"F5","product":"BIG-IP APM","publishedAt":"2026-09-22","cvss":{"score":9.3,"severity":"CRITICAL","version":"4.0"},"exploited":{"kevAdded":"2026-09-22","dueDate":"2026-09-25","ransomware":false},"epss":{"score":0.2655,"percentile":0.98016,"date":"2026-11-02"},"coverage":{"cloudflare":{"status":"blocks","firstOn":"2026-10-06","daysToRule":14},"aws":{"status":"none","firstOn":null,"daysToRule":null},"azure":{"status":"none","firstOn":null,"daysToRule":null},"google":{"status":"none","firstOn":null,"daysToRule":null},"fastly":{"status":"no_history","firstOn":null,"daysToRule":null},"f5":{"status":"none","firstOn":null,"daysToRule":null},"akamai":{"status":"no_source","firstOn":null,"daysToRule":null},"crs":{"status":"none","firstOn":null,"daysToRule":null}},"title":"BIG-IP APM OAuth vulnerability","description":"When a BIG-IP APM access policy and an OAuth profile are configured on a virtual server, specific malicious traffic can lead to remote code execution (RCE). This vulnerability is only present when BIG-IP APM is configured as an OAuth Authorization Server. Deployments using APM strictly as an OAuth Client / Resource Server (without OAuth authorization server profiles configured) are not affected by this vulnerability.\n\nImpact:\nThis vulnerability allows an unauthenticated attacker to perform remote code execution. The BIG-IP system in Appliance mode is also vulnerable. This is a data plane issue; there is no control plane exposure.\n\n \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","cwes":["CWE-122"],"vendors":[{"vendor":"cloudflare","status":"blocks","basis":"claimed","firstOn":"2026-10-06","firstIsNew":true,"daysToRule":14,"daysAtMost":null,"freePlan":false,"claims":[{"id":"7a4bf5a717369ee05e9681d1fedbe0d80551703d639d56210e9f86d25ad3b4be","cve_id":"CVE-2026-94127","vendor":"cloudflare","product":"Cloudflare Managed Ruleset","rule_id":"f0c31de76290471e842c77ca7206c737","rule_name":"F5 BIG-IP - UnAuth Heap-Overflow - CVE:CVE-2026-94127","change":"new","default_action":"Block","published_on":"2026-10-06","source_url":"https://developers.cloudflare.com/changelog/post/2026-10-06-waf-release/","source_title":"WAF Release - 2026-10-06","excerpt":"F5 BIG-IP - UnAuth Heap-Overflow - CVE:CVE-2026-94127. Previous action: Log. New action: Block. This is a new detection.","first_seen_at":"2026-11-02T21:00:15.176Z"}]},{"vendor":"aws","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"azure","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"google","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"fastly","status":"no_history","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"f5","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"akamai","status":"no_source","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"crs","status":"none","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]}],"updatedAt":"2026-11-02T22:17:38.477Z","cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","ssvc":{"exploitation":"active","automatable":"yes","technicalImpact":"total"},"measured":[],"social":{"total":0,"first_seen":null,"daily":[{"day":"2026-10-20","posts":0},{"day":"2026-10-21","posts":0},{"day":"2026-10-22","posts":0},{"day":"2026-10-23","posts":0},{"day":"2026-10-24","posts":0},{"day":"2026-10-25","posts":0},{"day":"2026-10-26","posts":0},{"day":"2026-10-27","posts":0},{"day":"2026-10-28","posts":0},{"day":"2026-10-29","posts":0},{"day":"2026-10-30","posts":0},{"day":"2026-10-31","posts":0},{"day":"2026-11-01","posts":0},{"day":"2026-11-02","posts":0}],"top_posts":[],"exploit_repositories":[]}}