CVE-2026-103678
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-103678 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- github.com/verdammelt/tnef
Frequently asked questions
- What is CVE-2026-103678?
- CVE-2026-103678 is a medium-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 5.4/10. Published 2026-10-01.
- How severe is CVE-2026-103678?
- Medium severity. CVSS v3 base score is 5.4 out of 10.