CVE-2026-94057NVD

Vulnerability Summary

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.

Severity Level

MEDIUM(4.0)

Published Date

Sep 19, 2026

Last Modified

Sep 19, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.16%Probability

Root Weakness (CWE)

CWE-93: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics — Score 4.0 (MEDIUM)

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeChanged

ConfidentialityNone

IntegrityLow

AvailabilityNone

Affected & Patched Versions

Affected Versions

Exim Exim < 4.100.1

Patched Versions

Exim Exim 4.100.1

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