CVE-2026-103678

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.

CVSS 3.1

8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 14% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-10-01

Modified

2026-10-05

Record from

the NVD, synced 2026-10-19

Affected

• tnef_project:tnef

References

• https://access.redhat.com/security/cve/CVE-2026-103678
• https://bugzilla.redhat.com/show_bug.cgi?id=2544476
• https://github.com/verdammelt/tnef

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