{"id":"CVE-2014-3931","published":"2017-03-31T16:59:00Z","modified":"2026-06-17T00:09:09Z","title":"Multi-Router Looking Glass (MRLG) Buffer Overflow Vulnerability","vendor":"Looking Glass","product":"Multi-Router Looking Glass (MRLG)","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":{"text":"The Multi-Router Looking Glass (MRLG) product, specifically its fastping.c component, contains a buffer overflow flaw in versions before 5.5.0. An attacker can exploit it remotely to write arbitrary memory and corrupt memory, with no authentication or user interaction required and no special configuration needed.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:10:04Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.28978,"percentile":0.9815,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2025-07-07","dueDate":"2025-07-28","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://mrlg.op-sec.us/ ; https://nvd.nist.gov/vuln/detail/CVE-2014-3931","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-07-07","exploitedFirstSeen":"2025-07-07","ransomware":false,"evidence":[{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-07-07"},{"url":"https://www.rapid7.com/cdn/assets/bltbd2f1cd70f9e3e7f/691360b9c91291146f1a5308/threat-landscape-report-q3-2025.pdf","date":"2025-11-12"},{"url":"https://cyble.com/resources/research-reports/global-cybersecurity-report/","date":"2025-12-11"},{"url":"https://www.loginsoft.com/reports/annually/vulnerability-intelligence-report-2025","date":"2026-01-20"}],"evidenceTotal":4,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"references":[{"url":"http://mrlg.op-sec.us/","tags":["Third Party Advisory"]},{"url":"http://www.s3.eurecom.fr/cve/CVE-2014-3931.txt","tags":["Third Party Advisory"]},{"url":"https://hackerone.com/reports/16330","tags":["Exploit","Third Party Advisory"]},{"url":"http://mrlg.op-sec.us/","tags":["Third Party Advisory"]},{"url":"http://www.s3.eurecom.fr/cve/CVE-2014-3931.txt","tags":["Third Party Advisory"]},{"url":"https://hackerone.com/reports/16330","tags":["Exploit","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-3931","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Remote exploitation of public-facing looking glass service","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allows remote attackers to cause an arbitrary memory write","start":65,"end":123}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1499.004","name":"Application or System Exploitation","tactics":["impact"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Memory corruption crashes or destabilizes the service","mappingType":"primary_impact","evidence":[{"from":"description","quote":"cause an arbitrary memory write and memory corruption","start":92,"end":145}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2014-3868","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-3868","exploited":true,"exploitedSince":"2025-07-07","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":["https://hackerone.com/reports/16330"],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1499.004"],"provenance":"ai"}],"timeline":[{"date":"2017-03-31","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2014-3931","provenance":"source"},{"date":"2025-07-07","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV 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tagged Exploit"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}