{"id":"CVE-2019-0797","kind":"vulnerability","aliases":["CVE-2019-0797"],"related":[],"title":"Microsoft Win32k: Microsoft Win32k Privilege Escalation Vulnerability","description":"Microsoft Win32k contains a privilege escalation vulnerability when the Win32k component fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode.\n\nCISA required action: Apply updates per vendor instructions.","summary":"Microsoft Win32k, the Windows kernel graphics component, mishandles objects in memory, which lets a local attacker run code in kernel mode. CISA lists it as exploited in the wild.","severity":"high","cvss":7.8,"epss":0.01874,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"Microsoft Win32k","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","infrastructure","windows"],"not_affected_if":["unknown"],"how_to_check":null,"fix":"Apply the Microsoft update for CVE-2019-0797 per vendor instructions, as CISA requires; the sources do not name the patched build.","status":"open","published_at":"2019-04-09T03:29:00+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:37:36+00:00","updated_at":"2026-10-23T21:57:34+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:37:36Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft update for CVE-2019-0797 per vendor instructions, as CISA requires; the sources do not name the patched build.","reach":"local","impact":"high","summary":"Microsoft Win32k, the Windows kernel graphics component, mishandles objects in memory, which lets a local attacker run code in kernel mode. CISA lists it as exploited in the wild.","category":"infrastructure","who_cares":["windows"],"confidence":0.6,"needs_auth":"yes","worst_case":"Attacker with local foothold gains kernel-mode code execution and full system control","analyst_note":"Find the Microsoft security update guide entry for CVE-2019-0797 to get affected Windows builds and patch KB numbers; sources give none.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["unknown"],"user_interaction":"no","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.00045,"input_tokens":2848,"output_tokens":330,"severity_before":"unknown"},"analyst_status":"queued","analyst_note":"Find the Microsoft security update guide entry for CVE-2019-0797 to get affected Windows builds and patch KB numbers; sources give none.","search":"'-0797':10A,13A '-2019':9A,12A 'action':79C 'allow':68C 'appli':80C 'attack':34B,70C 'cisa':40B,77C 'code':36B,73C 'compon':25B,58C 'contain':50C 'cve':8A,11A 'escal':6A,53C 'execut':72C 'exploit':16B,44B,67C 'fail':59C 'graphic':24B 'handl':62C 'infrastructur':17B 'instruct':84C 'kernel':23B,38B,75C 'let':31B 'list':41B 'local':33B 'memori':29B,65C 'microsoft':1A,3A,14A,19B,48C 'mishandl':26B 'mode':39B,76C 'object':27B,63C 'per':82C 'privileg':5A,52C 'proper':61C 'requir':78C 'run':35B 'success':66C 'updat':81C 'vendor':83C 'vulner':7A,54C 'wild':47B 'win32k':2A,4A,15A,20B,49C,57C 'window':18B,22B","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-2019-0797","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-0797","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":"2026-10-25T19:35:26+00:00","note":null},{"source":"epss","external_id":"CVE-2019-0797","url":"https://api.first.org/data/v1/epss?cve=CVE-2019-0797","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-2019-0797","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-0797","severity":null,"published_at":"2019-04-09T03:29:00+00:00","modified_at":"2026-06-17T02:08:55+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"}