CVE-2026-103679 Affecting tnef package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published2 Oct 2026
- disclosed1 Oct 2026
Introduced: 1 Oct 2026
NewCVE-2026-103679 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest tnef.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tnef package and not the tnef package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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).