CVE-2026-103679

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).

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

cpe:2.3:a:tnef_project:tnef:*:*:*:*:*:*:*:*

History

05 Oct 2026, 14:05

Type	Values Removed	Values Added
References	~~() https://access.redhat.com/security/cve/CVE-2026-103679 -~~	() https://access.redhat.com/security/cve/CVE-2026-103679 - Third Party Advisory
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=2544477 -~~	() https://bugzilla.redhat.com/show_bug.cgi?id=2544477 - Issue Tracking, Third Party Advisory
References	~~() https://github.com/verdammelt/tnef -~~	() https://github.com/verdammelt/tnef - Product
CPE		cpe:2.3:a:tnef_project:tnef::::::::
First Time		Tnef Project tnef Tnef Project

01 Oct 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-01 12:17

Updated : 2026-10-05 14:05

NVD link : CVE-2026-103679

Mitre link : CVE-2026-103679

CVE.ORG link : CVE-2026-103679

JSON object : View

Products Affected

tnef_project

tnef

CWE

CWE-416

Use After Free

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