CVE-2026-103679

MEDIUMCVSS 6.5

Description

A flaw was found in tnef. A remote attacker could exploit this vulnerability by providing a specially crafted Transport Neutral Encapsulation Format (TNEF) file containing multiple message bodies. During extraction, improper memory management triggers a use-after-free and double-free condition, causing the application to crash and resulting in a Denial of Service (DoS).

Timeline

Published:October 1st, 2026 12:17 PM

Last modified:October 5th, 2026 2:05 PM

CVSS Scoring

CVSS v3: 6.5 (MEDIUM)

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

Affected Software

From NVD CPE configuration data

Vendors

tnef_project

Products

tnef

Weaknesses (CWE)

CWE-416

References & Reports

Advisories, patches, and third-party reports

https://access.redhat.com/security/cve/CVE-2026-103679Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2544477Issue Tracking
https://github.com/verdammelt/tnefProduct

Source: NIST NVD · Data may lag official sources by up to one minute