onyx

onyx --cves cve-2023-42116

CVE-2023-42116

CRITExim
score
<0.1
cvss
9.8
epss
3.8%
published
2024-05-03
kev added
—
first seen

Exim SMTP contains a stack-based buffer overflow caused by improper validation of NTLM challenge request length in handling, letting remote attackers execute arbitrary code without authentication, exploit requires sending crafted NTLM challenge requests.

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 — PublishedP2026-10-21 — Tracked by OnyxTscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 3.2%2026-09-23: epss 3.2%2026-09-24: epss 3.2%2026-09-25: epss 3.2%2026-09-26: epss 3.2%2026-09-27: epss 3.2%2026-09-28: epss 3.6%2026-09-29: epss 3.8%2026-09-30: epss 3.8%2026-10-01: epss 3.8%2026-10-02: epss 3.8%2026-10-03: epss 3.8%2026-10-04: epss 3.8%2026-10-05: epss 3.8%2026-10-06: epss 3.8%2026-10-07: epss 3.8%2026-10-08: epss 3.8%2026-10-09: epss 3.8%2026-10-10: epss 3.8%2026-10-11: epss 3.8%2026-10-12: epss 3.8%2026-10-13: epss 3.8%2026-10-14: epss 3.8%2026-10-15: epss 3.8%2026-10-16: epss 3.8%2026-10-18: epss 3.8%2026-10-19: epss 3.8%2026-10-20: epss 3.8%2026-10-21: epss 3.8%3.8%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx

Weaknesses

CWE-121

References 2