{"cve":"CVE-2024-39929","nvd":{"published":"2024-07-04T15:15:10.323","modified":"2026-06-17T07:43:02.990","status":"Analyzed","description":"Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","score":5.4},"cwes":["CWE-116"],"references":["https://bugs.exim.org/show_bug.cgi?id=3099#c4","https://git.exim.org/exim.git/commit/1b3209b0577a9327ebb076f3b32b8a159c253f7b","https://git.exim.org/exim.git/commit/6ce5c70cff8989418e05d01fd2a57703007a6357","https://github.com/Exim/exim/compare/exim-4.98-RC2...exim-4.98-RC3","https://www.rfc-editor.org/rfc/rfc2231.txt"],"products":["exim:exim"],"source":"nvd","synced_at":"2026-10-19T21:52:00.836172422+00:00"},"epss":{"cve":"CVE-2024-39929","score":0.41491,"percentile":0.98679,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}