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.

• https://access.redhat.com/security/cve/CVE-2026-103678Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2544476Issue Tracking
• https://github.com/verdammelt/tnefProduct