{"id":"CVE-2014-3931","kind":"vulnerability","aliases":["CVE-2014-3931"],"related":[],"title":"multi-router looking glass project multi-router looking glass: fastping.c in MRLG (aka Multi-Router Looking Glass) before 5.5.0 allows remote attackers to cause an arbitrary…","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.\n\nCISA 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.","summary":"Multi-Router Looking Glass (MRLG) has a buffer overflow that lets remote attackers cause an arbitrary memory write and memory corruption. CISA lists it as known exploited in the wild.","severity":"critical","cvss":9.8,"epss":null,"exploited":true,"exploited_at":"2025-07-07T00:00:00+00:00","products":[{"name":"Looking Glass Multi-Router Looking Glass (MRLG)","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"multi-router looking glass project multi-router looking glass","fixed":[],"affected":"<= 5.4.1","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","looking-glass","mrlg","network-operators","other"],"not_affected_if":["not-running-mrlg"],"how_to_check":null,"fix":"Apply the vendor mitigations per CISA guidance, or discontinue use of MRLG if mitigations are unavailable.","status":"open","published_at":"2017-03-31T16:59:00+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:46:46+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-10-23T20:46:46Z","model":"claude-haiku-5-5","output":{"fix":"Apply the vendor mitigations per CISA guidance, or discontinue use of MRLG if mitigations are unavailable.","reach":"internet","summary":"Multi-Router Looking Glass (MRLG) has a buffer overflow that lets remote attackers cause an arbitrary memory write and memory corruption. CISA lists it as known exploited in the wild.","category":"other","who_cares":["mrlg","looking-glass","network-operators"],"confidence":0.5,"needs_auth":"unknown","worst_case":"Remote attacker writes arbitrary memory on the server, enabling code execution and corruption.","analyst_note":"Sources give no affected or fixed versions and no vendor mitigation details; find the vendor advisory linked from the CISA KEV entry and confirm the exact mitigation.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["not-running-mrlg"],"user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000437,"input_tokens":2578,"output_tokens":358,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':131C '-2014':31A,34A '-3931':32A,35A '22':130C '5.5.0':22A 'action':121C 'aka':15A 'allow':23A,107C 'appli':122C 'applic':128C 'arbitrari':29A,79B,113C 'attack':25A,76B,109C 'bod':129C 'buffer':71B,102C 'caus':27A,77B,111C 'cisa':85B,119C 'cloud':134C 'contain':100C 'corrupt':84B,118C 'could':106C 'cve':30A,33A 'discontinu':137C 'exploit':55B,90B 'fastping.c':12A 'follow':127C 'glass':5A,11A,20A,37A,42A,48A,54A,58B,67B,98C 'guidanc':132C 'instruct':126C 'known':89B 'let':74B 'list':86B 'look':4A,10A,19A,57B,66B,97C 'looking':36A,41A,47A,53A 'looking-glass':56B 'memori':80B,83B,114C,117C 'mitig':123C,143C 'mrlg':14A,43A,59B,68B,99C 'multi':2A,8A,17A,39A,45A,51A,64B,95C 'multi-rout':1A,7A,16A,63B,94C 'multi-router':38A,44A,50A 'network':61B 'network-oper':60B 'oper':62B 'overflow':72B,103C 'per':124C 'product':141C 'project':6A,49A 'remot':24A,75B,108C 'requir':120C 'router':3A,9A,18A,40A,46A,52A,65B,96C 'servic':135C 'unavail':145C 'use':138C 'vendor':125C 'vulner':104C 'wild':93B 'write':81B,115C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2017-03-31T16:59:00+00:00","kev":{"dateAdded":"2025-07-07","dueDate":"2025-07-28","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.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2014-3931","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2014-3931","severity":null,"published_at":"2025-07-07T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T11:39:14+00:00","note":null},{"source":"nvd","external_id":"CVE-2014-3931","url":"https://nvd.nist.gov/vuln/detail/CVE-2014-3931","severity":null,"published_at":"2017-03-31T16:59:00+00:00","modified_at":"2026-06-17T00:09:09+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}