# Tnef Project vulnerabilities

Source: https://junglewise.ai/threats/vendors/tnef-project  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 11 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/tnef-project.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Tnef Project: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-103680, was published on 1 October 2026. Nothing in the last four weeks, down from 3 vulnerabilities in the four before. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 3
- All time: 3 (0 critical, 0 exploited in the wild)

## About Tnef Project

Project that develops and maintains software for handling TNEF (Transport Neutral Encapsulation Format) files.

## Latest Tnef Project vulnerabilities

- [CVE-2026-103680: A flaw was found in tnef. A heap-based buffer overflow can occur in the find_free_number() function when generating…](https://junglewise.ai/threats/cve-2026-103680-a-flaw-was-found-in-tnef-a-heap-based-buffer-overflow-can-occur) (low, CVSS 3.1, published 1 Oct 2026)
- [CVE-2026-103679: tnef use-after-free and double-free in TNEF extraction](https://junglewise.ai/threats/cve-2026-103679-a-flaw-was-found-in-tnef-a-remote-attacker-could-exploit-this) (medium, CVSS 6.5, published 1 Oct 2026)
- [CVE-2026-103678: tnef heap out-of-bounds read in RTF data parsing](https://junglewise.ai/threats/cve-2026-103678-a-flaw-was-found-in-tnef-an-attacker-can-exploit-this) (medium, CVSS 5.4, published 1 Oct 2026)

## Most severe Tnef Project vulnerabilities

- [CVE-2026-103679: tnef use-after-free and double-free in TNEF extraction](https://junglewise.ai/threats/cve-2026-103679-a-flaw-was-found-in-tnef-a-remote-attacker-could-exploit-this) (medium, CVSS 6.5, published 1 Oct 2026)
- [CVE-2026-103678: tnef heap out-of-bounds read in RTF data parsing](https://junglewise.ai/threats/cve-2026-103678-a-flaw-was-found-in-tnef-an-attacker-can-exploit-this) (medium, CVSS 5.4, published 1 Oct 2026)
- [CVE-2026-103680: A flaw was found in tnef. A heap-based buffer overflow can occur in the find_free_number() function when generating…](https://junglewise.ai/threats/cve-2026-103680-a-flaw-was-found-in-tnef-a-heap-based-buffer-overflow-can-occur) (low, CVSS 3.1, published 1 Oct 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 3 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 3 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Tnef Project technologies

- [Tnef Project Tnef](https://junglewise.ai/threats/technologies/tnef): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Tnef Project vulnerabilities", https://junglewise.ai/threats/vendors/tnef-project, 11 November 2026.