{"id":"CVE-2023-21823","kind":"vulnerability","aliases":["CVE-2023-21823"],"related":[],"title":"Windows Graphics Component Remote Code Execution Vulnerability","description":"Microsoft Windows Graphic Component contains an unspecified vulnerability that allows for privilege escalation.\n\nCISA required action: Apply updates per vendor instructions.","summary":"A flaw in the Windows Graphic Component lets a local user raise their privileges. Exploitation in the wild is confirmed by CISA's Known Exploited Vulnerabilities catalog.","severity":"high","cvss":7.8,"epss":null,"exploited":true,"exploited_at":"2023-02-14T00:00:00+00:00","products":[{"name":"Microsoft Windows","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows 10 1507","fixed":["10.0.10240.19747"],"affected":"< 10.0.10240.19747","ecosystem":"vendor"},{"name":"microsoft windows 10 1607","fixed":["10.0.14393.5717"],"affected":"< 10.0.14393.5717","ecosystem":"vendor"},{"name":"microsoft windows 10 1809","fixed":["10.0.17763.4010"],"affected":"< 10.0.17763.4010","ecosystem":"vendor"},{"name":"microsoft windows 10 20h2","fixed":["10.0.19042.2604"],"affected":"< 10.0.19042.2604","ecosystem":"vendor"},{"name":"microsoft windows 10 21h2","fixed":["10.0.19044.2604"],"affected":"< 10.0.19044.2604","ecosystem":"vendor"},{"name":"microsoft windows 10 22h2","fixed":["10.0.19045.2604"],"affected":"< 10.0.19045.2604","ecosystem":"vendor"},{"name":"microsoft windows 11 21h2","fixed":["10.0.22000.1574"],"affected":"< 10.0.22000.1574","ecosystem":"vendor"},{"name":"microsoft windows 11 22h2","fixed":["10.0.22621.1265"],"affected":"< 10.0.22621.1265","ecosystem":"vendor"},{"name":"microsoft windows server 2008","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows server 2008","fixed":[],"affected":"= r2","ecosystem":"vendor"},{"name":"microsoft windows server 2012","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows server 2012","fixed":[],"affected":"= r2","ecosystem":"vendor"},{"name":"microsoft windows server 2016","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows server 2019","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows server 2022","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","infrastructure","windows"],"not_affected_if":[],"how_to_check":null,"fix":"Apply the Microsoft Windows security update for CVE-2023-21823 per vendor instructions (CISA required action).","status":"open","published_at":"2023-02-14T00:00:00+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:08:41+00:00","updated_at":"2026-10-23T22:29:04+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:08:41Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft Windows security update for CVE-2023-21823 per vendor instructions (CISA required action).","reach":"local","impact":"high","summary":"A flaw in the Windows Graphic Component lets a local user raise their privileges. Exploitation in the wild is confirmed by CISA's Known Exploited Vulnerabilities catalog.","category":"infrastructure","who_cares":["windows"],"confidence":0.6,"needs_auth":"yes","worst_case":"local attacker gains higher privileges, possibly SYSTEM, on the machine","analyst_note":"Find the affected Windows builds and the KB number for the January 2023 patch in Microsoft's CVE-2023-21823 advisory; the sources do not list versions.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":[],"user_interaction":"no","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000441,"input_tokens":2781,"output_tokens":326,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2023':9A,12A '-21823':10A,13A '10':18A,22A,26A,30A,34A,38A '11':42A,46A '1507':19A '1607':23A '1809':27A '2008':51A,55A '2012':59A,63A '2016':67A '2019':71A '2022':75A '20h2':31A '21h2':35A,43A '22h2':39A,47A 'action':121C 'allow':115C 'appli':122C 'catalog':105B 'cisa':100B,119C 'code':5A 'compon':3A,85B,109C 'confirm':98B 'contain':110C 'cve':8A,11A 'escal':118C 'execut':6A 'exploit':76B,93B,103B 'flaw':80B 'graphic':2A,84B,108C 'infrastructur':77B 'instruct':126C 'known':102B 'let':86B 'local':88B 'microsoft':14A,16A,20A,24A,28A,32A,36A,40A,44A,48A,52A,56A,60A,64A,68A,72A,106C 'per':124C 'privileg':92B,117C 'rais':90B 'remot':4A 'requir':120C 'server':50A,54A,58A,62A,66A,70A,74A 'unspecifi':112C 'updat':123C 'user':89B 'vendor':125C 'vulner':7A,104B,113C 'wild':96B 'window':1A,78B,83B,107C 'windows':15A,17A,21A,25A,29A,33A,37A,41A,45A,49A,53A,57A,61A,65A,69A,73A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2023-02-14T00:00:00+00:00","kev":{"dateAdded":"2023-02-14","dueDate":"2023-03-07","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":"secure@microsoft.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2023-21823","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-21823","severity":null,"published_at":"2023-02-14T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T16:39:47+00:00","note":null},{"source":"nvd","external_id":"CVE-2023-21823","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-21823","severity":null,"published_at":"2023-02-14T21:15:12+00:00","modified_at":"2026-08-19T17:18:20+00:00","first_seen_at":"2026-10-23T22:29:04+00:00","fetched_at":"2026-10-23T22:29:04+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"}