CVE-2014-3931: Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability
Reference page built from the source records below, each shown as its source publishes it. Dataset version ref-b85d23294264, updated 2026-11-02T23:39:54.475Z.
CISA Known Exploited Vulnerabilities
- Name
- Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability
- Vendor
- Looking Glass
- Product
- Multi-Router Looking Glass (MRLG)
- Added to the catalog
- 2025-07-07
- Due date for US federal agencies
- 2025-07-28
- Weaknesses
- CWE-119
- Catalog version
- 2026.10.30
Multi-Router Looking Glass (MRLG) contains a buffer overflow vulnerability that could allow remote attackers to cause an arbitrary memory write and memory corruption.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.
Links in CISA's notes
Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
NVD analysis
- Status
- Analyzed
- Published
- 2017-03-31T16:59:00.237
- Last modified
- 2026-06-17T00:09:09.423
- Weaknesses
- CWE-119
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.
| Metric | Score | Severity | Vector | Scored by |
|---|---|---|---|---|
| CVSS 3.1 | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | [email protected] (Primary) |
| CVSS 3.1 | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
| CVSS 2.0 | 7.5 | HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P | [email protected] (Primary) |
References
- 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)
- 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)
This product uses the NVD API but is not endorsed or certified by the NVD.
Read on 2026-11-02T23:41:35.381Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2014-3931
CVE record
- Assigner
- mitre
- State
- PUBLISHED
- Published
- 2017-03-31T15:00:00.000Z
- Updated
- 2025-10-21T23:55:43.153Z
- Problem types
- n/a
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.
References
- http://mrlg.op-sec.us/
- http://www.s3.eurecom.fr/cve/CVE-2014-3931.txt
- https://hackerone.com/reports/16330
Read on 2026-11-03T00:25:20.728Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2014/3xxx/CVE-2014-3931.json
Defensive techniques (MITRE D3FEND)
D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- Restore: Restore Software (acts on Software)
- Harden: Variable Initialization (acts on Subroutine)
- Isolate: Application-based Process Isolation (acts on Subroutine)
- Harden: Software Update (acts on Software)
- Harden: Domain Logic Validation (acts on Subroutine)
- Model: Asset Vulnerability Enumeration (acts on Software)
- Model: Software Inventory (acts on Software)
- Harden: Credential Scrubbing (acts on Subroutine)
- Harden: Trusted Library (acts on Subroutine)
- Harden: Null Pointer Checking (acts on Pointer Dereferencing Function, Memory Free Function)
- Harden: Variable Type Validation (acts on Pointer Dereferencing Function)
- Harden: Memory Block Start Validation (acts on Memory Free Function)
- Harden: Reference Nullification (acts on Memory Free Function)
D3FEND ontology version 1.6.0.
Read on 2026-11-02T23:54:38.936Z under licence d3fend-terms-of-use@f98cbc7e from https://d3fend.mitre.org/api/weakness/cwe/CWE-119.json
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Sources and licences
CISA
Source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30, CC0 1.0. Use of this data does not imply endorsement by CISA or DHS.
National Vulnerability Database (NIST)
This product uses the NVD API but is not endorsed or certified by the NVD.
NVD API Terms of Use (NIST publications in the public domain, 17 U.S.C. 105)
CVE Program, The MITRE Corporation
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MITRE D3FEND
MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/MITRE D3FEND Terms of Use (site + knowledge graph); source repo MIT
Cite this page
Dragons Eye Ransomware Tracker, "CVE-2014-3931: Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability",
entity page, dataset version ref-b85d23294264, updated 2026-11-02T23:39:54.475Z,
https://ransomware-tracker.com/cve/CVE-2014-3931 (accessed 2026-11-03).
Underlying source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30.
Underlying source: National Vulnerability Database (NIST), CVE API 2.0, record last modified 2026-06-17T00:09:09.423.
Underlying source: CVE List (CVE Program, The MITRE Corporation), record updated 2025-10-21T23:55:43.153Z.
Underlying source: MITRE D3FEND, ontology version 1.6.0.
Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.