CVE-2026-103680

3.1 LOWpublic exploit available

Published 2026-10-01 · Updated 2026-10-05

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

A flaw was found in tnef. A heap-based buffer overflow can occur in the find_free_number() function when generating numbered backup suffixes for duplicate filenames. When numbered backups are enabled and file overwriting is disabled, an attacker can supply a specially crafted Transport Neutral Encapsulation Format (TNEF) file with an excessive number of colliding attachment filenames, causing the numeric counter to write past the allocated memory buffer. This issue may result in an application crash, leading to a Denial of Service (DoS), or potentially arbitrary code execution.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

Weaknesses

CWE-787

Vendors

tnef project

Products

tnef

Public exploit & PoC references

https://github.com/verdammelt/tnef[Product]

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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