CVE-2026-103678 (GCVE-0-2026-103678)
Vulnerability from cvelistv5 – Published: 2026-10-01 11:34 – Updated: 2026-10-01 15:00
VLAI
EPSS
VEX
Title
Tnef: heap out-of-bounds read in get_rtf_data_from_buf() via uncompressed rtf mapi value
Summary
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.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 15:00 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-103678 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2544476 | issue-trackingx_refsource_REDHAT |
| https://github.com/verdammelt/tnef |
Date Public
2026-10-01 00:00
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