CVE-2014-3931

CRITICAL9.8

CISA KEV

Published 2017-03-31 · Updated 2026-06-17 · Source cve@mitre.org

Summary

CVE-2014-3931 is a critical-severity (CVSS 9.8) vulnerability in Looking Glass Multi-Router Looking Glass (MRLG). CISA added it to the Known Exploited Vulnerabilities catalog on July 7, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by July 28, 2025. CISA does not currently list it as used in ransomware campaigns.

All 1 known-exploited Looking Glass vulnerabilities →

Description

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.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-119CWE-119

CISA Known-Exploited Vulnerability

Product: Looking Glass — Multi-Router Looking Glass (MRLG)

Name: Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability

Date added: 2025-07-07 · Due: 2025-07-28

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

View on NVD

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