onyx

onyx --cves cve-2023-42115

CVE-2023-42115

CRITPOCExim
score
<0.1
cvss
9.8
epss
12.1%
published
2024-05-03
kev added
—
first seen

Exim contains an out-of-bounds write caused by improper validation of user-supplied data in the smtp service, letting remote attackers execute arbitrary code without authentication, exploit requires sending crafted data to TCP port 25.

Timeline

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

events2024-05-03 — PublishedP2026-09-28 — EPSS ≥ 10 %: from 10.0 %E2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 10.0%2026-09-23: epss 10.0%2026-09-24: epss 10.0%2026-09-25: epss 10.0%2026-09-26: epss 10.0%2026-09-27: epss 10.0%2026-09-28: epss 11.3%2026-09-29: epss 11.7%2026-09-30: epss 11.7%2026-10-01: epss 11.7%2026-10-02: epss 11.7%2026-10-03: epss 12.1%2026-10-04: epss 12.1%2026-10-05: epss 12.1%2026-10-06: epss 12.1%2026-10-07: epss 12.1%2026-10-08: epss 12.1%2026-10-09: epss 12.1%2026-10-10: epss 12.1%2026-10-11: epss 12.1%2026-10-12: epss 12.1%2026-10-13: epss 12.1%2026-10-14: epss 12.1%2026-10-15: epss 12.1%2026-10-16: epss 12.1%2026-10-18: epss 12.1%2026-10-19: epss 12.1%2026-10-20: epss 12.1%2026-10-21: epss 12.1%12.1%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. EPSS ≥ 10 % from 10.0 %
  3. Tracked by Onyx
  4. Public PoC

Exploit availability

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

Weaknesses

CWE-787

References 1