CVE-2026-94057 — MEDIUM (4.0)

Vulnerability 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.

CVSS Score

4.0

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-93

References

https://lists.exim.org/lurker/message/20260918.121220.0f87338e.en.html

FAQ

What is CVE-2026-94057?

CVE-2026-94057 is a vulnerability with a CVSS score of 4.0 (MEDIUM). 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.

How severe is CVE-2026-94057?

CVE-2026-94057 has been rated MEDIUM with a CVSS base score of 4.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-94057?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.