CVE-2017-6416: Flexense Sysgauge

Critical severity, CVSS 9.8. EPSS: 10.9% chance of exploitation in the next 30 days.

An issue was discovered in SysGauge 1.5.18. A buffer overflow vulnerability in SMTP connection verification leads to arbitrary code execution. The attack vector is a crafted SMTP daemon that sends a long 220 (aka "Service ready") string.

Affected products

• Flexense Sysgauge: version 1.5.18 only

Published 2017-03-06. Last modified 2026-06-17.