CVE-2026-94057

Publication date 19 September 2026

Last updated 28 September 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

4.0 · Medium

Score breakdown

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.

Status

Package Ubuntu Release Status
exim4 26.04 LTS resolute
Fixed 4.99.1-1ubuntu1.5
24.04 LTS noble
Fixed 4.97-4ubuntu4.8
22.04 LTS jammy
Fixed 4.95-4ubuntu2.12
20.04 LTS focal
Needs evaluation
18.04 LTS bionic
Needs evaluation
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty
Needs evaluation

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
exim4

Severity score breakdown

CVSS version: CVSS v3.0

Base score 4.0 · Medium

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

References

Related Ubuntu Security Notices (USN)

    • USN-8834-1
    • Exim vulnerabilities
    • 28 September 2026

Other references

Access our resources on patching vulnerabilities