CVE-2017-9438: Virustotal Yara

High severity, CVSS 7.5. EPSS: 2.5% chance of exploitation in the next 30 days.

libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial of service (stack consumption) via a crafted rule (involving hex strings) that is mishandled in the _yr_re_emit function, a different vulnerability than CVE-2017-9304.

Affected products

• Virustotal Yara: version 3.5.0 only

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