{"id":"CVE-2017-11826","kind":"vulnerability","aliases":["CVE-2017-11826"],"related":[],"title":"Microsoft Office: Microsoft Office Remote Code Execution Vulnerability","description":"Microsoft Office 2010, SharePoint Enterprise Server 2010, SharePoint Server 2010, Web Applications, Office Web Apps Server 2010 and 2013, Word Viewer, Word 2007, 2010, 2013 and 2016, Word Automation Services, and Office Online Server allow remote code execution when the software fails to properly handle objects in memory.","summary":"Microsoft Office has a memory handling flaw that lets a crafted document run arbitrary code as the current user. CISA lists it as actively exploited in the wild.","severity":"critical","cvss":9.3,"epss":0.81333,"exploited":true,"exploited_at":"2022-03-03T00:00:00+00:00","products":[{"name":"Microsoft Office","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","microsoft-office","vendor","windows"],"not_affected_if":["unknown"],"how_to_check":null,"fix":"Apply Microsoft Office updates per vendor instructions; CISA required action is to apply updates per vendor instructions.","status":"open","published_at":"2017-10-13T13:29:02+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:24:05+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-23T21:24:05Z","model":"claude-haiku-5-5","output":{"fix":"Apply Microsoft Office updates per vendor instructions; CISA required action is to apply updates per vendor instructions.","reach":"unknown","impact":"high","summary":"Microsoft Office has a memory handling flaw that lets a crafted document run arbitrary code as the current user. CISA lists it as actively exploited in the wild.","category":"vendor","who_cares":["microsoft-office","windows"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker runs arbitrary code as the logged-in user via a crafted file","analyst_note":"Sources do not list affected or fixed Office build numbers or the delivery vector; check the Microsoft security update guide entry for CVE-2017-11826 and the KEV record.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["unknown"],"user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.00045,"input_tokens":2846,"output_tokens":330,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-11826':11A,14A '-2017':10A,13A '2007':73C '2010':53C,57C,60C,67C,74C '2013':69C,75C '2016':77C 'activ':46B 'allow':85C 'app':65C 'applic':62C 'arbitrari':36B 'autom':79C 'cisa':42B 'code':6A,37B,87C 'craft':33B 'current':40B 'cve':9A,12A 'document':34B 'enterpris':55C 'execut':7A,88C 'exploit':17B,47B 'fail':92C 'flaw':29B 'handl':28B,95C 'let':31B 'list':43B 'memori':27B,98C 'microsoft':1A,3A,15A,19B,23B,51C 'microsoft-offic':18B 'object':96C 'offic':2A,4A,20B,24B,52C,63C,82C 'office':16A 'onlin':83C 'proper':94C 'remot':5A,86C 'run':35B 'server':56C,59C,66C,84C 'servic':80C 'sharepoint':54C,58C 'softwar':91C 'user':41B 'vendor':21B 'viewer':71C 'vulner':8A 'web':61C,64C 'wild':50B 'window':22B 'word':70C,72C,78C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2017-10-13T13:29:02+00:00","kev":{"dateAdded":"2022-03-03","dueDate":"2022-03-24","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:L/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-2017-11826","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-11826","severity":null,"published_at":"2022-03-03T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T10:39:07+00:00","note":null},{"source":"epss","external_id":"CVE-2017-11826","url":"https://api.first.org/data/v1/epss?cve=CVE-2017-11826","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-2017-11826","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11826","severity":null,"published_at":"2017-10-13T13:29:02+00:00","modified_at":"2026-06-17T01:02:26+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"}