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).
Affected products
tnef_project: tnef
References3
- access.redhat.com/security/cve/CVE-2026-103679 Third Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2544477 Issue TrackingThird Party Advisory
- github.com/verdammelt/tnef Product
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 21 · as of 10 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
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