6.5

CVE-2026-103679

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

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).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Tnef Project ≫ Tnef Version <= 1.4.18
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.3% 0.202
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
patrick@puiterwijk.org 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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