VulnerabilityAnalyzed
CVE-2014-3931
Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability
KEVCRITICAL 9.8EPSS 29.0%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 28 July 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 28.98% probability · 98th percentile
- CISA KEV
- Listed 7 July 2025 · due 28 July 2025
- Weakness
- CWE-119
- Affected
- multi-router looking glass project/multi-router looking glass
- Source
- cve@mitre.org
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://mrlg.op-sec.us/ ; https://nvd.nist.gov/vuln/detail/CVE-2014-3931
References
- http://mrlg.op-sec.us/Third Party Advisory
- http://www.s3.eurecom.fr/cve/CVE-2014-3931.txtThird Party Advisory
- https://hackerone.com/reports/16330Exploit, Third Party Advisory
- http://mrlg.op-sec.us/Third Party Advisory
- http://www.s3.eurecom.fr/cve/CVE-2014-3931.txtThird Party Advisory
- https://hackerone.com/reports/16330Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-3931US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.