CVSS 3.1 Score 5.4 of 10 (medium)


Published Jul 4, 2024
Updated: Jul 9, 2024


CVE-2024-39929 is a cyber vulnerability that affects Exim versions up to 4.97.1. It occurs due to the misparsing of a multiline RFC 2231 header filename, allowing remote attackers to bypass the $mime_filename extension-blocking mechanism. This vulnerability could potentially enable the delivery of executable attachments to end users' mailboxes. The affected products include w0LXRL, w0NV-f, and w0LXRK. The base severity of this vulnerability is rated as MEDIUM, with a base score of 5.4 according to CVSS version 3.1. To remediate this issue, organizations should consider updating their Exim software to a version beyond 4.97.1, which includes the necessary fixes for this vulnerability.

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