CVE-2026-103679CWE-416

CVE-2026-103679

Medium · published October 1, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
19.8
In the wild
Unconfirmed
What it is

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).

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00283 · 19.8th percentile
Weakness
CWE-416 · Use After Free
Published
2026-10-01T16:17Z
Affected products (1)
ProductVersionsFixed in
tnef_project/tnef≤ 1.4.18—
References (3)
https://access.redhat.com/security/cve/CVE-2026-103679 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2544477 · [email protected]https://github.com/verdammelt/tnef · [email protected]
EPSS history
Timeline
  • 03 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 01 OCT 11:34Z
    Tnef: use-after-free and double-free in get_body_files() via multi-value body extraction
    cvelistv5