{"id":"CVE-2019-0808","kind":"vulnerability","aliases":["CVE-2019-0808"],"related":[],"title":"Microsoft Win32k: Microsoft Win32k Privilege Escalation Vulnerability","description":"Microsoft Win32k contains a privilege escalation vulnerability due to the component failing to properly handle objects in memory. Successful exploitation allows an attacker to run code in kernel mode.\n\nCISA required action: Apply updates per vendor instructions.","summary":"Microsoft Win32k, the Windows kernel graphics driver, mishandles objects in memory and allows privilege escalation. A local attacker who already runs code on a Windows machine can execute code in kernel mode and take full control of the system.","severity":"high","cvss":7.8,"epss":0.53017,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"Microsoft Win32k","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","infrastructure","microsoft","self-hosted","windows"],"not_affected_if":["fully-patched-systems"],"how_to_check":null,"fix":"Apply the Microsoft security update for CVE-2019-0808 per vendor instructions; the specific KB article is not in the sources.","status":"open","published_at":"2019-04-09T03:29:00+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:41:45+00:00","updated_at":"2026-10-23T21:57:34+00:00","category":"infrastructure","confidence":0.7,"triage":{"at":"2026-10-23T21:41:45Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft security update for CVE-2019-0808 per vendor instructions; the specific KB article is not in the sources.\nunknown","reach":"local","impact":"high","summary":"Microsoft Win32k, the Windows kernel graphics driver, mishandles objects in memory and allows privilege escalation. A local attacker who already runs code on a Windows machine can execute code in kernel mode and take full control of the system.","category":"infrastructure","who_cares":["windows","microsoft","self-hosted"],"confidence":0.7,"needs_auth":"yes","worst_case":"Local attacker gains kernel-mode code execution and full system control.","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2019-0808 to confirm affected Windows builds and the patch KB numbers; sources give none.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["fully-patched-systems"],"user_interaction":"no","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000466,"input_tokens":2844,"output_tokens":363,"severity_before":"unknown"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2019-0808 to confirm affected Windows builds and the patch KB numbers; sources give none.","search":"'-0808':10A,13A '-2019':9A,12A 'action':93C 'allow':35B,82C 'alreadi':42B 'appli':94C 'attack':40B,84C 'cisa':91C 'code':44B,51B,87C 'compon':72C 'contain':64C 'control':58B 'cve':8A,11A 'driver':29B 'due':69C 'escal':6A,37B,67C 'execut':50B 'exploit':16B,81C 'fail':73C 'full':57B 'graphic':28B 'handl':76C 'host':21B 'infrastructur':17B 'instruct':98C 'kernel':27B,53B,89C 'local':39B 'machin':48B 'memori':33B,79C 'microsoft':1A,3A,14A,18B,23B,62C 'mishandl':30B 'mode':54B,90C 'object':31B,77C 'per':96C 'privileg':5A,36B,66C 'proper':75C 'requir':92C 'run':43B,86C 'self':20B 'self-host':19B 'success':80C 'system':61B 'take':56B 'updat':95C 'vendor':97C 'vulner':7A,68C 'win32k':2A,4A,15A,24B,63C 'window':22B,26B,47B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2019-04-09T03:29:00+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:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2019-0808","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-0808","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-2019-0808","url":"https://api.first.org/data/v1/epss?cve=CVE-2019-0808","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-2019-0808","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-0808","severity":null,"published_at":"2019-04-09T03:29:00+00:00","modified_at":"2026-06-17T02:08:56+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"}