onyx

onyx --cves cve-2026-48840

CVE-2026-48840

MEDExim
score
<0.1
cvss
5.3
epss
0.4%
published
2026-05-30
kev added
—
first seen

Exim < 4.99.4 contains an information disclosure vulnerability caused by mishandling certain short payloads in some proxy configurations, letting remote attackers disclose uninitialized stack memory values, exploit requires specific proxy configuration.

Timeline

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

events2026-05-30 — PublishedP2026-10-21 — Tracked by OnyxTscore2026-10-21: score <0.1<0.1epss2026-09-22: epss 0.3%2026-09-23: epss 0.3%2026-09-24: epss 0.7%2026-09-25: epss 0.7%2026-09-26: epss 0.7%2026-09-27: epss 0.7%2026-09-29: epss 0.4%2026-09-30: epss 0.4%2026-10-01: epss 0.4%2026-10-02: epss 0.4%2026-10-03: epss 0.4%2026-10-04: epss 0.4%2026-10-05: epss 0.4%2026-10-06: epss 0.4%2026-10-07: epss 0.4%2026-10-08: epss 0.4%2026-10-09: epss 0.4%2026-10-10: epss 0.4%2026-10-11: epss 0.4%2026-10-12: epss 0.4%2026-10-13: epss 0.4%2026-10-14: epss 0.4%2026-10-15: epss 0.4%2026-10-16: epss 0.4%2026-10-18: epss 0.4%2026-10-19: epss 0.4%2026-10-20: epss 0.4%2026-10-21: epss 0.4%0.4%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx

Weaknesses

CWE-839

References 4