{"id":"CVE-2017-11774","kind":"vulnerability","aliases":["CVE-2017-11774"],"related":[],"title":"Microsoft Office: Microsoft Office Outlook Security Feature Bypass Vulnerability","description":"Microsoft Office Outlook contains a security feature bypass vulnerability due to improperly handling objects in memory. Successful exploitation allows an attacker to execute commands.\n\nCISA required action: Apply updates per vendor instructions.","summary":"Microsoft Office Outlook mishandles objects in memory, which lets an attacker bypass a security feature. Successful exploitation allows the attacker to execute commands on the victim's machine.","severity":"high","cvss":7.8,"epss":0.59627,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"Microsoft Office","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","microsoft-office","outlook","vendor","windows"],"not_affected_if":["unpatched-builds-only"],"how_to_check":null,"fix":"Apply the Microsoft updates for Office Outlook per vendor instructions (CISA required action); the specific patched build is unknown from the sources.","status":"open","published_at":"2017-10-13T13:29:00+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:39:16+00:00","updated_at":"2026-10-23T21:57:34+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-23T21:39:16Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft updates for Office Outlook per vendor instructions (CISA required action); the specific patched build is unknown from the sources.","reach":"unknown","impact":"high","summary":"Microsoft Office Outlook mishandles objects in memory, which lets an attacker bypass a security feature. Successful exploitation allows the attacker to execute commands on the victim's machine.","category":"vendor","who_cares":["microsoft-office","outlook","windows"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker runs commands on the victim's machine via Outlook","analyst_note":"Confirm affected and fixed Office/Outlook builds and the delivery vector (e.g. crafted message) from the Microsoft security advisory for CVE-2017-11774.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["unpatched-builds-only"],"user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000461,"input_tokens":2837,"output_tokens":354,"severity_before":"unknown"},"analyst_status":"queued","analyst_note":"Confirm affected and fixed Office/Outlook builds and the delivery vector (e.g. crafted message) from the Microsoft security advisory for CVE-2017-11774.","search":"'-11774':12A,15A '-2017':11A,14A 'action':79C 'allow':42B,71C 'appli':80C 'attack':35B,44B,73C 'bypass':8A,36B,60C 'cisa':77C 'command':47B,76C 'contain':56C 'cve':10A,13A 'due':62C 'execut':46B,75C 'exploit':18B,41B,70C 'featur':7A,39B,59C 'handl':65C 'improp':64C 'instruct':84C 'let':33B 'machin':52B 'memori':31B,68C 'microsoft':1A,3A,16A,20B,25B,53C 'microsoft-offic':19B 'mishandl':28B 'object':29B,66C 'offic':2A,4A,21B,26B,54C 'office':17A 'outlook':5A,22B,27B,55C 'per':82C 'requir':78C 'secur':6A,38B,58C 'success':40B,69C 'updat':81C 'vendor':23B,83C 'victim':50B 'vulner':9A,61C 'window':24B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2017-10-13T13:29:00+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: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-2017-11774","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-11774","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":"2026-10-25T10:39:08+00:00","note":null},{"source":"epss","external_id":"CVE-2017-11774","url":"https://api.first.org/data/v1/epss?cve=CVE-2017-11774","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-2017-11774","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11774","severity":null,"published_at":"2017-10-13T13:29:00+00:00","modified_at":"2026-06-17T01:02:20+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"}