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.
3.7Low
CVE-2026-94055
Description
Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.
Weakness (CWE):
CWE-416
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
References and patches
CPE matches (NVD) (1)
cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*< 4.100.1