{"id":"CVE-2020-2300","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-2300","generatedAt":"2026-10-28T04:17:32.904Z","title":"Jenkins Active Directory Plugin 2.19 and earlier does not prohibit the use of an empty password in Windows/ADSI mode, which allows attackers to log in to Jenkins as any user depending on the configuration of the Active Directory server.","description":"Jenkins Active Directory Plugin 2.19 and earlier does not prohibit the use of an empty password in Windows/ADSI mode, which allows attackers to log in to Jenkins as any user depending on the configuration of the Active Directory server.","published":"2020-11-04T15:15:11.000Z","lastModified":"2026-06-17T03:12:10.000Z","status":"Modified","sourceIdentifier":"jenkinsci-cert@googlegroups.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["jenkins/active directory"],"epss":{"score":0.01672,"percentile":0.76702,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.67%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2020/11/04/6","tags":["Mailing List","Third Party Advisory"],"source":"jenkinsci-cert@googlegroups.com"},{"url":"https://www.jenkins.io/security/advisory/2020-11-04/#SECURITY-2099","tags":["Vendor Advisory"],"source":"jenkinsci-cert@googlegroups.com"},{"url":"http://www.openwall.com/lists/oss-security/2020/11/04/6","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.jenkins.io/security/advisory/2020-11-04/#SECURITY-2099","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-2300","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}