CVE-2014-3931 (GCVE-0-2014-3931)
Vulnerability from cvelistv5 – Published: 2017-03-31 15:00 – Updated: 2025-10-21 23:55Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-17 03:55 UTC
CWE
- n/a
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
4 references
| URL | Tags |
|---|---|
| http://mrlg.op-sec.us/ | x_refsource_CONFIRM |
| http://www.s3.eurecom.fr/cve/CVE-2014-3931.txt | x_refsource_MISC |
| https://hackerone.com/reports/16330 | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Date Public
2014-08-17 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5aaa8626-ca9a-4556-be7a-b8a0e7e8fec9
Exploited: Yes
Timestamps
First Seen: 2025-07-07
Asserted: 2025-07-07
Scope
Notes: KEV entry: Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability | Affected: Looking Glass / Multi-Router Looking Glass (MRLG) | Description: 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: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2025-07-28 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://mrlg.op-sec.us/ ; https://nvd.nist.gov/vuln/detail/CVE-2014-3931
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-119 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Multi-Router Looking Glass (MRLG) |
| Due Date | 2025-07-28 |
| Date Added | 2025-07-07 |
| Vendorproject | Looking Glass |
| Vulnerabilityname | Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:25 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5a2fb4f9-f75a-4666-b41a-344d053abe67
Exploited: Yes
Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: 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: MRLG / Multi-Router Looking Glass | CVSS: 9.8 (CRITICAL) | EPSS: 0.26572 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | 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. |
| Vendor | MRLG |
| Product | Multi-Router Looking Glass |
| Added Date | 2026-06-01T10:36:30.780Z |
| Cvss Score | 9.8 |
| Epss Score | 0.26572 |
| Cvss Severity | CRITICAL |
| Epss Percentile | 0.97755 |
| Used In Malware | unknown |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:03 UTC
| Updated: 2026-07-10 06:14 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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