CVE-2026-103679
mediumA flaw was found in tnef.
Vendor / product: Tnef Project — tnef
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
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (patrick@puiterwijk.org)
Timeline (UTC)
Published: 2026-10-01 12:17
Modified: 2026-10-05 14:05
NVD status: Analyzed
Last synced 3 days ago
Verified against the source API 2026-10-27 06:56 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
tnef_project / tnef ≤1.4.18
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://access.redhat.com/security/cve/CVE-2026-103679 patrick@puiterwijk.org
- https://bugzilla.redhat.com/show_bug.cgi?id=2544477 patrick@puiterwijk.org
- https://github.com/verdammelt/tnef patrick@puiterwijk.org
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:56 UTC · record ↗