CVE-2026-103678CWE-125

CVE-2026-103678

Medium · published October 1, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
14.1
In the wild
Unconfirmed
What it is

A flaw was found in tnef. An attacker can exploit this vulnerability by providing a specially crafted file containing uncompressed Rich Text Format (RTF) data. Because the application fails to properly validate input buffer boundaries before copying data in get_rtf_data_from_buf(), reading beyond the allocated memory occurs. This flaw can cause the application to crash, leading to a Denial of Service (DoS), or leak sensitive memory contents into extracted output files.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00239 · 14.1th percentile
Weakness
CWE-125 · Out-of-bounds Read
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-2026-103678 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2544476 · [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: heap out-of-bounds read in get_rtf_data_from_buf() via uncompressed rtf mapi value
    cvelistv5