CVE-2026-103678
An attacker can exploit this vulnerability by providing a specially crafted file containing uncompressed Rich Text Format (RTF) data.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
- EPSS
- 0.24% probability · 14th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- tnef project/tnef
- Source
- patrick@puiterwijk.org
EPSS moved from 0.2% on 2 October 2026 to 0.2% on 26 October 2026.
References
- https://access.redhat.com/security/cve/CVE-2026-103678Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2544476Issue Tracking, Third Party Advisory
- https://github.com/verdammelt/tnefProduct
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.