CVE-2018-19976: Virustotal Yara

Medium severity, CVSS 5.5. EPSS: 1.3% chance of exploitation in the next 30 days.

In YARA 3.8.1, bytecode in a specially crafted compiled rule is exposed to information about its environment, in libyara/exec.c. This is a consequence of the design of the YARA virtual machine.

Affected products

• Virustotal Yara: version 3.8.1 only

Published 2018-12-17. Last modified 2026-06-17.