CVE-2026-103678
Tnef: heap out-of-bounds read in get_rtf_data_from_buf() via uncompressed rtf mapi value
- State
- Published
- Severity
- 5.4 Medium
- Published
- Oct 1, 2026
- Updated
- Oct 1, 2026
- Reserved
- Oct 1, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L | fedora |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
tnef |
|
References
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