{"basis":"claimed","id":"CVE-2021-42550","name":"RCE from attacker with configuration edit priviledges through JNDI lookup","vendorProject":"QOS.ch","product":"logback","publishedAt":"2021-12-16","cvss":{"score":6.6,"severity":"MEDIUM","version":"3.1"},"exploited":null,"epss":{"score":0.0477,"percentile":0.91911,"date":"2026-11-02"},"coverage":{"cloudflare":{"status":"no_history","firstOn":null,"daysToRule":null},"aws":{"status":"none","firstOn":null,"daysToRule":null},"azure":{"status":"none","firstOn":null,"daysToRule":null},"google":{"status":"no_history","firstOn":null,"daysToRule":null},"fastly":{"status":"no_history","firstOn":null,"daysToRule":null},"f5":{"status":"rule","firstOn":"2023-01-17","daysToRule":397},"akamai":{"status":"no_source","firstOn":null,"daysToRule":null},"crs":{"status":"no_history","firstOn":null,"daysToRule":null}},"title":"RCE from attacker with configuration edit priviledges through JNDI lookup","description":"In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitrary code loaded from LDAP servers.","cwes":["CWE-502"],"vendors":[{"vendor":"cloudflare","status":"no_history","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"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":"no_history","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":"rule","basis":"claimed","firstOn":"2023-01-17","firstIsNew":true,"daysToRule":397,"daysAtMost":null,"freePlan":false,"claims":[{"id":"0ae4c35ca803903071326cb7c629db6ca4f52508db765c211d1660f7a1f3ef6d","cve_id":"CVE-2021-42550","vendor":"f5","product":"Attack signatures","rule_id":"200104818","rule_name":"Logback configuration file upload","change":"new","default_action":null,"published_on":"2023-01-17","source_url":"https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog","source_title":"F5 Distributed Cloud attack signatures changelog","excerpt":"Added: signature 200104818 \"Logback configuration file upload\" (Server Side Code Injection, risk High), systems: Java Servlets/JSP, Apache Tomcat, BEA Systems WebLogic Server, Apache Struts, JavaServer Faces (JSF). References: CVE-2021-42550.","first_seen_at":"2026-11-02T21:00:28.819Z"},{"id":"1be07871f17a13cf6b50396026750d93729eff6de3005640a6ca900f6503d000","cve_id":"CVE-2021-42550","vendor":"f5","product":"Attack signatures","rule_id":"200104818","rule_name":"Logback configuration file upload","change":"new","default_action":null,"published_on":"2023-02-14","source_url":"https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog","source_title":"F5 Distributed Cloud attack signatures changelog","excerpt":"Added: signature 200104818 \"Logback configuration file upload\" (Server Side Code Injection, risk High), systems: Java Servlets/JSP, Apache Tomcat, BEA Systems WebLogic Server, Apache Struts, JavaServer Faces (JSF). References: CVE-2021-42550.","first_seen_at":"2026-11-02T21:00:28.654Z"}]},{"vendor":"akamai","status":"no_source","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]},{"vendor":"crs","status":"no_history","basis":"claimed","firstOn":null,"firstIsNew":false,"daysToRule":null,"daysAtMost":null,"freePlan":false,"claims":[]}],"updatedAt":"2026-11-02T21:17:16.933Z","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","ssvc":null,"measured":[],"social":{"total":0,"first_seen":null,"daily":[{"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},{"day":"2026-11-03","posts":0}],"top_posts":[],"exploit_repositories":[]}}