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CVE-2026-103678

5.4 · MEDIUM

A flaw was found in tnef.

Published Oct 1, 2026tnef_projectCWE-125EPSS 0.24%

Overview

CVE-2026-103678 is a medium-severity vulnerability affecting tnef_project tnef. It was published on October 1, 2026 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from tnef_project. Update tnef to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
tnef_projecttnef0Affected

References

Refaccess.redhat.com/security/cve/CVE-2026-103678Refbugzilla.redhat.com/show_bug.cgi?id=2544476GitHubgithub.com/verdammelt/tnef

How CyberStrike helps

Frequently asked questions

What is CVE-2026-103678?

CVE-2026-103678 is a medium-severity vulnerability affecting tnef_project tnef. It was published on October 1, 2026 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-103678?

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-103678?

Check the references section for vendor advisories and patches from tnef_project. Update tnef to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-103678?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-103678 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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