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.
Published: 2026-10-01
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 05 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Tnef Project
Tnef Project tnef
CPEs cpe:2.3:a:tnef_project:tnef:*:*:*:*:*:*:*:*
Vendors & Products Tnef Project
Tnef Project tnef

Thu, 01 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 01 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Verdammelt
Verdammelt tnef
Vendors & Products Verdammelt
Verdammelt tnef

Thu, 01 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
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.
Title Tnef: heap out-of-bounds read in get_rtf_data_from_buf() via uncompressed rtf mapi value
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L'}


Subscriptions

Tnef Project Tnef
Verdammelt Tnef
cve-icon MITRE

Status: PUBLISHED

Assigner: fedora

Published:

Updated: 2026-10-01T15:00:19.812Z

Reserved: 2026-10-01T09:06:43.922Z

Link: CVE-2026-103678

cve-icon Vulnrichment

Updated: 2026-10-01T15:00:16.685Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-01T12:17:15.557

Modified: 2026-10-05T14:25:05.183

Link: CVE-2026-103678

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T15:35:29Z

Weaknesses