onyx

onyx --cves cve-2024-39929

CVE-2024-39929

MEDPOCExim
score
<0.1
cvss
5.4
epss
41.5%
published
2024-07-04
kev added
—
first seen

Exim through 4.97.1 misparses a multiline RFC 2231 header filename, letting remote attackers bypass filename extension-blocking protections, potentially delivering executable attachments to end users' mailboxes.

Timeline

How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.

events2024-07-04 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 41.2%2026-09-23: epss 41.2%2026-09-24: epss 41.2%2026-09-25: epss 41.2%2026-09-26: epss 41.2%2026-09-27: epss 41.2%2026-09-29: epss 41.2%2026-09-30: epss 41.2%2026-10-01: epss 41.2%2026-10-02: epss 41.2%2026-10-03: epss 41.2%2026-10-04: epss 41.2%2026-10-05: epss 41.2%2026-10-06: epss 41.2%2026-10-07: epss 41.2%2026-10-08: epss 41.5%2026-10-09: epss 41.5%2026-10-10: epss 41.5%2026-10-11: epss 41.5%2026-10-12: epss 41.5%2026-10-13: epss 41.5%2026-10-14: epss 41.5%2026-10-15: epss 41.5%2026-10-16: epss 41.5%2026-10-18: epss 41.5%2026-10-19: epss 41.5%2026-10-20: epss 41.5%2026-10-21: epss 41.5%41.5%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx
  3. Public PoC

Exploit availability

Public PoC flagged by vulnx; no direct exploit link among the citations.

Weaknesses

CWE-116

References 5