{"id":"CVE-2020-28019","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-28019","generatedAt":"2026-10-27T23:27:37.042Z","title":"Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences.","description":"Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA.","published":"2021-05-06T13:15:10.000Z","lastModified":"2026-06-17T03:10:01.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-665"],"affected":["exim/exim"],"epss":{"score":0.61664,"percentile":0.99164,"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":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 61.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28019-BDATA.txt","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28019-BDATA.txt","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-28019","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."}