CVE-2014-3931: Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2025-07-07. EPSS: 29% chance of exploitation in the next 30 days.

fastping.c in MRLG (aka Multi-Router Looking Glass) before 5.5.0 allows remote attackers to cause an arbitrary memory write and memory corruption.

Affected products

• Multi-Router Looking Glass Project Multi-Router Looking Glass: up to and including 5.4.1

Published 2017-03-31. Last modified 2026-06-17.