{"id":"CVE-2017-7269","kind":"vulnerability","aliases":["CVE-2017-7269"],"related":[],"title":"Microsoft Internet Information Services (IIS): Microsoft Windows Server Buffer Overflow Vulnerability","description":"Buffer overflow in the ScStoragePathFromUrl function in the WebDAV service in Internet Information Services (IIS) 6.0 in Microsoft Windows Server 2003 R2 allows remote attackers to execute arbitrary code via a long header beginning with \"If: <http://\" in a PROPFIND request, as exploited in the wild in July or August 2016.","summary":"Microsoft IIS 6.0 on Windows Server 2003 R2 has a buffer overflow triggered by an overlong \"If: <http://\" header in a PROPFIND request. A remote attacker can execute code on the server.","severity":"critical","cvss":10.0,"epss":0.99823,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"Microsoft Internet Information Services (IIS)","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","iis","infrastructure","self-hosted","windows-server-2003"],"not_affected_if":["iis-7-or-later","webdav-disabled"],"how_to_check":null,"fix":"Apply updates per vendor instructions, as CISA requires; the sources do not name a specific patch or version.\nRetire Windows Server 2003 if it is still in use, since it is out of support.","status":"open","published_at":"2017-03-27T02:59:00+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:39:21+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.8,"triage":{"at":"2026-10-23T21:39:21Z","model":"claude-haiku-5-5","output":{"fix":"Apply updates per vendor instructions, as CISA requires; the sources do not name a specific patch or version.\nRetire Windows Server 2003 if it is still in use, since it is out of support.","reach":"internet","impact":"high","summary":"Microsoft IIS 6.0 on Windows Server 2003 R2 has a buffer overflow triggered by an overlong \"If: <http://\" header in a PROPFIND request. A remote attacker can execute code on the server.","category":"infrastructure","who_cares":["iis","windows-server-2003","self-hosted"],"confidence":0.8,"needs_auth":"no","worst_case":"Remote attacker runs code on the server with no login","analyst_note":"Confirm the patch identifier and whether the PROPFIND/WebDAV path must be enabled for exposure, using the Microsoft advisory for CVE-2017-7269.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["iis-7-or-later","webdav-disabled"],"user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"critical"},"cost_usd":0.000482,"input_tokens":2883,"output_tokens":387,"severity_before":"unknown"},"analyst_status":"queued","analyst_note":"Confirm the patch identifier and whether the PROPFIND/WebDAV path must be enabled for exposure, using the Microsoft advisory for CVE-2017-7269.","search":"'-2017':13A,16A '-7269':14A,17A '2003':32B,39B,84C '2016':113C '6.0':35B,79C 'allow':86C 'arbitrari':91C 'attack':57B,88C 'august':112C 'begin':97C 'buffer':9A,43B,64C 'code':60B,92C 'cve':12A,15A 'execut':59B,90C 'exploit':23B,105C 'function':69C 'header':50B,96C 'host':28B 'ii':5A,24B,34B,78C 'iis':22A 'inform':3A,76C 'information':20A 'infrastructur':25B 'internet':2A,19A,75C 'juli':110C 'long':95C 'microsoft':1A,6A,18A,33B,81C 'overflow':10A,44B,65C 'overlong':48B 'propfind':53B,102C 'r2':40B,85C 'remot':56B,87C 'request':54B,103C 'scstoragepathfromurl':68C 'self':27B 'self-host':26B 'server':8A,31B,38B,63B,83C 'servic':4A,73C,77C 'services':21A 'trigger':45B 'via':93C 'vulner':11A 'webdav':72C 'wild':108C 'window':7A,30B,37B,82C 'windows-serv':29B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2017-03-27T02:59:00+00:00","kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","requiredAction":"Apply updates per vendor instructions.","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-2017-7269","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-7269","severity":null,"published_at":"2021-11-03T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:53+00:00","fetched_at":"2026-10-25T13:39:33+00:00","note":null},{"source":"epss","external_id":"CVE-2017-7269","url":"https://api.first.org/data/v1/epss?cve=CVE-2017-7269","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-2017-7269","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-7269","severity":null,"published_at":"2017-03-27T02:59:00+00:00","modified_at":"2026-06-17T01:23:58+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"}