{"id":"CVE-2017-11882","kind":"vulnerability","aliases":["CVE-2017-11882"],"related":[],"title":"Microsoft Office: Microsoft Office Memory Corruption Vulnerability","description":"Microsoft Office 2007 Service Pack 3, Microsoft Office 2010 Service Pack 2, Microsoft Office 2013 Service Pack 1, and Microsoft Office 2016 allow an attacker to run arbitrary code in the context of the current user by failing to properly handle objects in memory, aka \"Microsoft Office Memory Corruption Vulnerability\". This CVE ID is unique from CVE-2017-11884.","summary":"Microsoft Office has a memory corruption flaw that lets a crafted document run code as the current user. Attackers are actively exploiting it in the wild and it is tied to ransomware campaigns.","severity":"critical","cvss":9.3,"epss":0.99945,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"Microsoft Office","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","infrastructure","microsoft-office","ransomware","windows"],"not_affected_if":["fully-patched-office"],"how_to_check":null,"fix":"Apply the Microsoft Office security update per vendor instructions (CISA required action); the specific patched build is unknown from the sources.","status":"open","published_at":"2017-11-15T03:29:01+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:37:12+00:00","updated_at":"2026-10-23T21:57:34+00:00","category":"infrastructure","confidence":0.8,"triage":{"at":"2026-10-23T21:37:12Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft Office security update per vendor instructions (CISA required action); the specific patched build is unknown from the sources.","reach":"internet","impact":"high","summary":"Microsoft Office has a memory corruption flaw that lets a crafted document run code as the current user. Attackers are actively exploiting it in the wild and it is tied to ransomware campaigns.","category":"infrastructure","who_cares":["microsoft-office","windows"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs code as the logged-in user after the victim opens a crafted document.","analyst_note":"Find the patched Office build numbers and the exact affected versions from the Microsoft advisory for CVE-2017-11882 to fill in how_to_check and fix.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["fully-patched-office"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"critical"},"cost_usd":0.000454,"input_tokens":2815,"output_tokens":344,"severity_before":"unknown"},"analyst_status":"queued","analyst_note":"Find the patched Office build numbers and the exact affected versions from the Microsoft advisory for CVE-2017-11882 to fill in how_to_check and fix.","search":"'-11882':10A,13A '-11884':114C '-2017':9A,12A,113C '1':73C '2':67C '2007':58C '2010':64C '2013':70C '2016':77C '3':61C 'activ':43B 'aka':100C 'allow':78C 'arbitrari':83C 'attack':41B,80C 'campaign':55B 'code':36B,84C 'context':87C 'corrupt':6A,28B,104C 'craft':33B 'current':39B,90C 'cve':8A,11A,107C,112C 'document':34B 'exploit':16B,44B 'fail':93C 'flaw':29B 'handl':96C 'id':108C 'infrastructur':17B 'let':31B 'memori':5A,27B,99C,103C 'microsoft':1A,3A,14A,19B,23B,56C,62C,68C,75C,101C 'microsoft-offic':18B 'object':97C 'offic':2A,4A,20B,24B,57C,63C,69C,76C,102C 'office':15A 'pack':60C,66C,72C 'proper':95C 'ransomwar':21B,54B 'run':35B,82C 'servic':59C,65C,71C 'tie':52B 'uniqu':110C 'user':40B,91C 'vulner':7A,105C 'wild':48B 'window':22B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2017-11-15T03:29:01+00:00","kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Known"},"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-2017-11882","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-11882","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":"2026-10-25T11:39:18+00:00","note":null},{"source":"epss","external_id":"CVE-2017-11882","url":"https://api.first.org/data/v1/epss?cve=CVE-2017-11882","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-2017-11882","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11882","severity":null,"published_at":"2017-11-15T03:29:01+00:00","modified_at":"2026-06-17T01:02:31+00:00","first_seen_at":"2026-10-23T21:57:34+00:00","fetched_at":"2026-10-23T21:57:34+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"}