Exim <4.100.1 Use-After-Free via GnuTLS TLS Settings
CVE-2026-94055 Published on September 19, 2026
Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.
Vulnerability Analysis
CVE-2026-94055 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-94055 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-94055
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Affected Versions
Exim:- Version 4.98 and below 4.100.1 is affected.