CVE-2017-9146: Ytnef Project Ytnef

High severity, CVSS 8.8. EPSS: 2.4% chance of exploitation in the next 30 days.

The TNEFFillMapi function in lib/ytnef.c in libytnef in ytnef through 1.9.2 does not ensure a nonzero count value before a certain memory allocation, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted tnef file.

Affected products

• Ytnef Project Ytnef: up to and including 1.9.2

Published 2017-05-22. Last modified 2026-06-17.