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Public proof of conceptFix available

CVE-2024-39929

A public proof of concept exists; no exploitation attested.

  • Published2024-07-04
  • WeaknessCWE-116

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2024-07-0415:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-04 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2024-39929?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-39929?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · CISA-ADP
Exim
BranchAffectedFixed in
4.97≤ 4.97.1no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • eximTuxCare:CentOS:7all versions · fixed in 4.97.1-1.el7.tuxcare.els1and 5 other packages
  • eximSUSE:Package Hub 15 SP5all versions · fixed in 4.97.1-bp155.5.12.1
  • eximopenSUSE:Tumbleweedall versions · fixed in 4.98-1.1
  • eximopenSUSE:Leap 15.5all versions · fixed in 4.97.1-bp155.5.12.1
  • eximopenEuler:24.03-LTSall versions · fixed in 4.97.1-3.oe2403
  • eximopenEuler:22.03-LTS-SP4all versions · fixed in 4.96-4.oe2203sp4
  • eximopenEuler:22.03-LTS-SP3all versions · fixed in 4.96-4.oe2203sp3
  • eximCleanStartall versions · fixed in 4.98-r0

14 more package ranges on OSV.dev

Vendor advisories

  • CVE-2024-39929 Red Hat Product Security

    exim: exim: Incorrect parsing of multiline rfc2231 header filename

Full record on NVD

Fix

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedrxerium/CVE-2024-39929michael-david-fry/CVE-2024-39929
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Published
2024-07-04
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-7m4v-cwm7-4f2m

Frequently asked questions

What is CVE-2024-39929?

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.

Is CVE-2024-39929 actively exploited?

A proof-of-concept exploit exists for CVE-2024-39929, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2024-39929?

CVE-2024-39929 has a CVSS v3 base score of 5.4 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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Same product first, then the same vendor advisory and the same publication week.

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Sources for this record