CVE-2014-3931
Multi-Router Looking Glass (MRLG) Buffer Overflow - [Actively Exploited]
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.
INFO
Published Date :
March 31, 2017, 4:59 p.m.
Last Modified :
July 8, 2025, 1 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Multi-Router Looking Glass (MRLG) contains a buffer overflow vulnerability that could allow remote attackers to cause an arbitrary memory write and memory corruption.
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
Public PoC/Exploit Available at Github
CVE-2014-3931 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2014-3931
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2014-3931.
| URL | Resource |
|---|---|
| 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Lua
CISA Bot is a GitHub bot that automatically monitors the Cybersecurity and Infrastructure Security Agency (CISA) Known Exploited Vulnerabilities (KEV) Catalog. When new vulnerabilities are published in the KEV, the bot creates GitHub issues in this repository with detailed information about each vulnerability.
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2014-3931 vulnerability anywhere in the article.
-
The Hacker News
CISA Adds Four Critical Vulnerabilities to KEV Catalog Due to Active Exploitation
Cyber Attacks / Vulnerability The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added four security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence ... Read more
The following table lists the changes that have been made to the
CVE-2014-3931 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
Jul. 08, 2025
Action Type Old Value New Value Added Date Added 2025-07-07 Added Due Date 2025-07-28 Added 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. Added Vulnerability Name Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 07, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-119 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://mrlg.op-sec.us/ Added Reference http://www.s3.eurecom.fr/cve/CVE-2014-3931.txt Added Reference https://hackerone.com/reports/16330 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Apr. 04, 2017
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://hackerone.com/reports/16330 No Types Assigned https://hackerone.com/reports/16330 Exploit, Third Party Advisory Changed Reference Type http://www.s3.eurecom.fr/cve/CVE-2014-3931.txt No Types Assigned http://www.s3.eurecom.fr/cve/CVE-2014-3931.txt Third Party Advisory Changed Reference Type http://mrlg.op-sec.us/ No Types Assigned http://mrlg.op-sec.us/ Third Party Advisory Added CWE CWE-119 Added CPE Configuration OR *cpe:2.3:a:multi-router_looking_glass_project:multi-router_looking_glass:5.4.1:*:*:*:*:*:*:* (and previous)
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2014-3931 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2014-3931
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
61.84 }} 60.16%
score
0.98227
percentile