{"id":"CVE-2021-3100","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-3100","generatedAt":"2026-10-28T00:33:19.583Z","title":"The Apache Log4j hotpatch package before log4j-cve-2021-44228-hotpatch-1.1-13 didn’t mimic the permissions of the JVM being patched, allowing it to escalate privileges.","description":"The Apache Log4j hotpatch package before log4j-cve-2021-44228-hotpatch-1.1-13 didn’t mimic the permissions of the JVM being patched, allowing it to escalate privileges.","published":"2022-04-19T23:15:13.000Z","lastModified":"2026-06-17T04:04:41.000Z","status":"Modified","sourceIdentifier":"psirt@paloaltonetworks.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"},"cwe":["CWE-250","CWE-269"],"affected":["amazon/log4jhotpatch"],"epss":{"score":0.00367,"percentile":0.3027,"date":"2026-10-26","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 (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://alas.aws.amazon.com/AL2/ALAS-2021-1732.html","tags":["Vendor Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://alas.aws.amazon.com/ALAS-2021-1554.html","tags":["Vendor Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://unit42.paloaltonetworks.com/aws-log4shell-hot-patch-vulnerabilities","tags":["Exploit","Third Party Advisory"],"source":"psirt@paloaltonetworks.com"},{"url":"https://alas.aws.amazon.com/AL2/ALAS-2021-1732.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://alas.aws.amazon.com/ALAS-2021-1554.html","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://unit42.paloaltonetworks.com/aws-log4shell-hot-patch-vulnerabilities","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3100","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."}