Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-94057

CVE-2026-94057MEDIUM

Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted d…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  L  N    5.3   .0020    8.5     —

AFFECTED
  Product  Versions     Fixed
  Exim     unspecified  —

TIMELINE
  Sep 19  Reserved by mitre
  Sep 19  Published (CNA: mitre)
  Sep 24  RESCORED — CVE-2026-94057 (Exim). CVSS 4 → 5.3 (NVD).

CWE-93 · CNA: mitre · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted data sent after a rejection during DATA processing.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 19, 2026	Reserved	Reserved by mitre
September 19, 2026	Published	Published (CNA: mitre)
September 24, 2026	RESCORED	RESCORED — CVE-2026-94057 (Exim). CVSS 4 → 5.3 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Exim	Exim	—	—	—

Weaknesses

CWE-93

References (1)

https://lists.exim.org/lurker/message/20260918.121220.0f87338e.en.html [Vendor Advisory]

Authoritative record: CVE-2026-94057 at cve.org

Vendors: exim

Weaknesses: CWE-93

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-94057 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.