CVEs / CVE-2014-3931
CVE-2014-3931: Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability
- Known exploited in the CISA KEV catalog since 7 Jul 2025
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 28.9% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Multi-Router Looking Glass (MRLG) contains a buffer overflow vulnerability that could allow remote attackers to cause an arbitrary memory write and memory corruption.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 7 Jul 2025 |
|---|---|
| Due date for US federal agencies | 28 Jul 2025 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-119 |
References
- CVE-2014-3931 on NVD
- CVE-2014-3931 in the CISA KEV catalog
- https://mrlg.op-sec.us/ (cited by CISA)
- http://mrlg.op-sec.us/ Third Party Advisory
- http://www.s3.eurecom.fr/cve/CVE-2014-3931.txt Third Party Advisory
- https://hackerone.com/reports/16330 Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-3931 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.