{"id":"CVE-2023-42114","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-42114","generatedAt":"2026-11-04T21:57:16.933Z","title":"Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability.","description":"Exim NTLM Challenge Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Exim. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of NTLM challenge requests. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated data structure. An attacker can leverage this vulnerability to disclose information in the context of the service account.\n. Was ZDI-CAN-17433.","published":"2024-05-03T03:15:50.000Z","lastModified":"2026-06-17T06:23:29.000Z","status":"Modified","sourceIdentifier":"zdi-disclosures@trendmicro.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-125"],"affected":["exim/exim"],"epss":{"score":0.2706,"percentile":0.98049,"date":"2026-11-03","history":[{"date":"2026-09-28","score":0.26653,"percentile":0.97958}]},"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 27.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-1468/","tags":["Third Party Advisory"],"source":"zdi-disclosures@trendmicro.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00002.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-1468/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-42114","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."}