CVE-2024-39929

CVSS 3.1: 5.4 medium
EPSS: 41%p99
Published: Jul 4, 2024 · Jul 4, 2024
Modified: Jun 17, 2026

Analyze CVE-2024-39929 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

Description · NVD

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.

Vendors: exim

Products: exim

Weakness: CWE-116

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (41.5%)

In the news

5 stories

Week in review: CrowdStrike update causes widespread IT outage, critical Splunk Enterprise flaw

Help Net SecurityJul 29, 16:16 UTC · Jul 29, 2024Data breachCVE-2024-36991 CVE-2024-39929 CVE-2024-20401+22 · 1 read

Critical Exim vulnerability facilitates malware delivery (CVE-2024-39929)

Help Net SecurityJul 15, 00:00 UTC · Jul 15, 2024VulnerabilityExploitedCVE-2024-399292 · 1 read

Critical flaw in Exim MTA could allow to deliver malware to users' inboxes

Security AffairsJul 12, 19:25 UTC · Jul 12, 2024MalwareExploitedCVE-2024-399292 · 1 read

Critical Exim Mail Server Vulnerability Exposes Millions to Malicious Attachments

The Hacker NewsJul 12, 10:55 UTC · Jul 12, 2024VulnerabilityExploitedCVE-2024-399292 · 1 read

Exim vulnerability affecting 1.5M servers lets attackers attach malicious files

Ars Technica · SecurityJul 11, 20:47 UTC · Jul 11, 2024VulnerabilityCVE-2024-399292 · 1 read