CVE catalog
CVE-2026-103679
A flaw was found in tnef. A remote attacker could exploit this vulnerability by providing a specially crafted Transport Neutral Encapsulation Format (TNEF) file containing multiple message bodies. Dur
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.28% · Oct 25, 2026
A flaw was found in tnef. A remote attacker could exploit this vulnerability by providing a specially crafted Transport Neutral Encapsulation Format (TNEF) file containing multiple message bodies. During extraction, improper memory management triggers a use-after-free and double-free condition, causing the application to crash and resulting in a Denial of Service (DoS).
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | tnef | sid | 1.4.18-6 | vulnerable |
| Debian | tnef | forky | 1.4.18-6 | vulnerable |
| Debian | tnef | trixie | 1.4.18-4 | vulnerable |
| Debian | tnef | bookworm | 1.4.18-3 | vulnerable |
| Cpe | tnef | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | tnef | source | sid | (unfixed) | unimportant | Not reported | [1149710] |
| Debian | tnef | source | forky | (unfixed) | unimportant | Not reported | [1149710] |
| Debian | tnef | source | trixie | (unfixed) | unimportant | Not reported | [1149710] |
| Debian | tnef | source | bookworm | (unfixed) | unimportant | Not reported | [1149710] |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [tnef]Affected
Details (2)
1.4.18-3· amd64 · bookwormAffected
nvd · tnef · debian · bookworm; nvd · tnef · debian · 12
1.4.18-3· arm64 · bookwormAffected
nvd · tnef · debian · bookworm; nvd · tnef · debian · 12
[Debian 13 (Trixie)]
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-103679]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-103679]
- [https://security-tracker.debian.org/tracker/CVE-2026-103679]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-103679.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]