{"id":"CVE-2018-8414","kind":"vulnerability","aliases":["CVE-2018-8414"],"related":[],"title":"Microsoft Windows: Microsoft Windows Shell Remote Code Execution Vulnerability","description":"A remote code execution vulnerability exists when the Windows Shell does not properly validate file paths, aka \"Windows Shell Remote Code Execution Vulnerability.\" This affects Windows 10 Servers, Windows 10.","summary":"A flaw in the Windows Shell does not properly validate file paths, allowing remote code execution. An attacker who can get a user to open a crafted file or link can run code on the affected Windows machine.","severity":"critical","cvss":9.3,"epss":0.72621,"exploited":true,"exploited_at":"2022-03-25T00:00:00+00:00","products":[{"name":"Microsoft Windows","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","other","windows"],"not_affected_if":["patched-windows"],"how_to_check":null,"fix":"Apply the Microsoft Windows security update for CVE-2018-8414 per vendor instructions (CISA KEV required action); the specific KB number is not in the sources.","status":"open","published_at":"2018-08-15T17:29:10+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:20:03+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-10-23T21:20:03Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft Windows security update for CVE-2018-8414 per vendor instructions (CISA KEV required action); the specific KB number is not in the sources.","reach":"internet","impact":"high","summary":"A flaw in the Windows Shell does not properly validate file paths, allowing remote code execution. An attacker who can get a user to open a crafted file or link can run code on the affected Windows machine.","category":"other","who_cares":["windows"],"confidence":0.7,"needs_auth":"no","worst_case":"Remote code execution on the Windows machine with the user's privileges","analyst_note":"Confirm the patched Windows build numbers and KB articles from Microsoft's CVE-2018-8414 advisory, and whether a specific file type or path triggers it.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["patched-windows"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.00045,"input_tokens":2812,"output_tokens":338,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2018':11A,14A '-8414':12A,15A '10':85C,88C 'affect':56B,83C 'aka':75C 'allow':33B 'attack':38B 'code':7A,35B,53B,61C,79C 'craft':47B 'cve':10A,13A 'execut':8A,36B,62C,80C 'exist':64C 'exploit':18B 'file':31B,48B,73C 'flaw':22B 'get':41B 'link':50B 'machin':58B 'microsoft':1A,3A,16A 'open':45B 'path':32B,74C 'proper':29B,71C 'remot':6A,34B,60C,78C 'run':52B 'server':86C 'shell':5A,26B,68C,77C 'user':43B 'valid':30B,72C 'vulner':9A,63C,81C 'window':2A,4A,20B,25B,57B,67C,76C,84C,87C 'windows':17A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2018-08-15T17:29:10+00:00","kev":{"dateAdded":"2022-03-25","dueDate":"2022-04-15","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2018-8414","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2018-8414","severity":null,"published_at":"2022-03-25T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T11:39:17+00:00","note":null},{"source":"epss","external_id":"CVE-2018-8414","url":"https://api.first.org/data/v1/epss?cve=CVE-2018-8414","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:44+00:00","fetched_at":"2026-10-23T19:13:44+00:00","note":null},{"source":"nvd","external_id":"CVE-2018-8414","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-8414","severity":null,"published_at":"2018-08-15T17:29:10+00:00","modified_at":"2026-06-17T02:04:48+00:00","first_seen_at":"2026-10-23T21:57:35+00:00","fetched_at":"2026-10-23T21:57:35+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"}