CVE-2026-103679

Name of the Vulnerable Software and Affected Versions tnef (affected versions not specified)

Description A flaw exists where a remote attacker can cause a Denial of Service (DoS) by providing a specially crafted Transport Neutral Encapsulation Format (TNEF) file containing multiple message bodies. During the extraction process, improper memory management leads to a use-after-free (where the program continues to use a pointer after it has been freed) and a double-free (where the program attempts to free the same memory location twice) condition, resulting in an application crash.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.