{"id":"CVE-2021-21307","aliases":["EUVD-2021-8661","GHSA-2xvv-723c-8p7r"],"status":"published","title":"Remote Code Exploit in Lucee Admin","description":"Lucee Server is a dynamic, Java based (JSR-223), tag and scripting language used for rapid web application development. In Lucee Admin before versions 5.3.7.47, 5.3.6.68 or 5.3.5.96 there is an unauthenticated remote code exploit. This is fixed in versions 5.3.7.47, 5.3.6.68 or 5.3.5.96. As a workaround, one can block access to the Lucee Administrator.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.89189,"percentile":0.99784,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-862"],"published":"2021-02-11T18:20:21Z","modified":"2026-10-20T14:22:37Z","exploits":[{"source":"metasploit","id":"exploit/linux/http/lucee_admin_imgprocess_file_write","title":"Lucee Administrator imgProcess.cfm Arbitrary File Write","type":"exploit","platform":"Linux,Unix","date":"2021-01-15","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/linux/http/lucee_admin_imgprocess_file_write"},{"source":"nuclei","id":"CVE-2021-21307","title":"Lucee Admin - Remote Code Execution","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21307.yaml"}],"products":[{"vendor":"lucee","product":"lucee"},{"vendor":"lucee","product":"lucee_server"}],"references":[{"url":"https://github.com/lucee/Lucee/security/advisories/GHSA-2xvv-723c-8p7r","tags":["x_refsource_CONFIRM","x_transferred","Product","advisory"]},{"url":"https://github.com/lucee/Lucee/commit/6208ab7c44c61d26c79e0b0af10382899f57e1ca","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://dev.lucee.org/t/lucee-vulnerability-alert-november-2020/7643","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","advisory"]},{"url":"https://github.com/httpvoid/writeups/blob/main/Apple-RCE.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://portswigger.net/daily-swig/security-researchers-earn-50k-after-exposing-critical-flaw-in-apple-travel-portal","tags":["x_refsource_MISC","x_transferred","Press/Media Coverage","Third Party Advisory","advisory"]},{"url":"http://ciacfug.org/blog/updating-lucee-as-part-of-a-vulnerability-alert-response","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"http://packetstormsecurity.com/files/163864/Lucee-Administrator-imgProcess.cfm-Arbitrary-File-Write.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry","evidence"]}],"sources":{"cve":[{"id":"CVE-2021-21307","title":"Remote Code Exploit in Lucee Admin","description":"Lucee Server is a dynamic, Java based (JSR-223), tag and scripting language used for rapid web application development. In Lucee Admin before versions 5.3.7.47, 5.3.6.68 or 5.3.5.96 there is an unauthenticated remote code exploit. This is fixed in versions 5.3.7.47, 5.3.6.68 or 5.3.5.96. As a workaround, one can block access to the Lucee Administrator.","status":"published","published":"2021-02-11T18:20:21Z","modified":"2024-08-03T18:09:15.162Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:33:00.488332Z"}],"euvd":[{"id":"EUVD-2021-8661","description":"Lucee Server is a dynamic, Java based (JSR-223), tag and scripting language used for rapid web application development. In Lucee Admin before versions 5.3.7.47, 5.3.6.68 or 5.3.5.96 there is an unauthenticated remote code exploit. This is fixed in versions 5.3.7.47, 5.3.6.68 or 5.3.5.96. As a workaround, one can block access to the Lucee Administrator.","status":"published","published":"2021-02-11T18:20:21Z","modified":"2024-08-03T18:09:15Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T03:25:06.347262Z"}],"nvd":[{"id":"CVE-2021-21307","description":"Lucee Server is a dynamic, Java based (JSR-223), tag and scripting language used for rapid web application development. In Lucee Admin before versions 5.3.7.47, 5.3.6.68 or 5.3.5.96 there is an unauthenticated remote code exploit. This is fixed in versions 5.3.7.47, 5.3.6.68 or 5.3.5.96. As a workaround, one can block access to the Lucee Administrator.","status":"published","published":"2021-02-11T19:15:13.313Z","modified":"2026-06-17T03:35:15.687Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:06:50.031227Z"}],"osv":[{"id":"CVE-2021-21307","description":"Lucee Server is a dynamic, Java based (JSR-223), tag and scripting language used for rapid web application development. In Lucee Admin before versions 5.3.7.47, 5.3.6.68 or 5.3.5.96 there is an unauthenticated remote code exploit. This is fixed in versions 5.3.7.47, 5.3.6.68 or 5.3.5.96. As a workaround, one can block access to the Lucee Administrator.","status":"published","published":"2021-02-11T19:15:13.313Z","modified":"2026-10-20T14:22:37.702346865Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:18.004149Z"}]}}