CVE-2026-103679

Tnef: use-after-free and double-free in get_body_files() via multi-value body extraction

Published Oct 1, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Tnef Project
Tnef Project tnef
CPEs cpe:2.3:a:tnef_project:tnef:*:*:*:*:*:*:*:*
Vendors & Products Tnef Project
Tnef Project tnef
Type Values Removed Values Added
First Time appeared Verdammelt
Verdammelt tnef
Vendors & Products Verdammelt
Verdammelt tnef
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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).
Title Tnef: use-after-free and double-free in get_body_files() via multi-value body extraction
Weaknesses CWE-416
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
fedora
Published
Updated
Oct 1, 2026, 2:59 PM
Reserved
Oct 1, 2026, 9:06 AM
Status
Analyzed
Published
Oct 1, 2026, 12:17 PM
Modified
Oct 5, 2026, 2:05 PM