{"id":"CVE-2026-105567","kind":"vulnerability","aliases":["CVE-2026-105567"],"related":[],"title":"Windows Print Spooler: use-after-free lets a local user gain higher privileges","description":"Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.","summary":"A use-after-free bug in Windows Print Spooler components lets an already-authorized local user raise their privileges. An attacker who can run code on the machine can gain elevated rights.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","print-spooler","windows"],"not_affected_if":["no-local-untrusted-users"],"how_to_check":"- Check the Windows build with `winver` and compare it against Microsoft's security update guide entry for CVE-2026-105567.\n- Check whether the Print Spooler service is running with `Get-Service Spooler` in PowerShell.","fix":null,"status":"open","published_at":"2026-11-10T19:17:59+00:00","first_seen_at":"2026-11-10T19:24:20+00:00","triaged_at":"2026-11-10T19:54:00+00:00","updated_at":"2026-11-10T19:54:00+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:54:00Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Print Spooler: use-after-free lets a local user gain higher privileges","impact":"high","summary":"A use-after-free bug in Windows Print Spooler components lets an already-authorized local user raise their privileges. An attacker who can run code on the machine can gain elevated rights.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","print-spooler"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains elevated system privileges on the machine","analyst_note":"Find the Microsoft security update guide entry for CVE-2026-105567 to confirm affected builds and the patch.","how_to_check":"- Check the Windows build with `winver` and compare it against Microsoft's security update guide entry for CVE-2026-105567.\n- Check whether the Print Spooler service is running with `Get-Service Spooler` in PowerShell.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-untrusted-users"],"who_is_affected":"Any Windows machine with the Print Spooler components present can be affected, and the attacker must already have a local authorized account. The sources do not name the exact affected Windows builds. Servers and workstations where untrusted users have local logins are the main concern.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000699,"input_tokens":4484,"output_tokens":501,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft security update guide entry for CVE-2026-105567 to confirm affected builds and the patch.","search":"'-105567':17A,20A '-2026':16A,19A 'allow':68C 'alreadi':40B 'already-author':39B 'attack':48B,71C 'author':41B,70C 'bug':31B 'code':52B 'compon':36B,67C 'cve':15A,18A 'elev':58B,73C 'free':7A,30B,62C 'gain':12A,57B 'higher':13A 'infrastructur':21B 'let':8A,37B 'local':10A,42B,75C 'machin':55B 'print':2A,23B,34B,65C 'print-spool':22B 'privileg':14A,46B,74C 'rais':44B 'right':59B 'run':51B 'spooler':3A,24B,35B,66C 'use':5A,28B,60C 'use-after-fre':4A,27B 'user':11A,43B 'window':1A,25B,33B,64C","nicknames":[],"mitigations":[],"who_affected":"Any Windows machine with the Print Spooler components present can be affected, and the attacker must already have a local authorized account. The sources do not name the exact affected Windows builds. Servers and workstations where untrusted users have local logins are the main concern.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","printspooler","windows"],"campaign_type":null,"search_a":"'-105567':17A,20A '-2026':16A,19A 'cve':15A,18A 'free':7A 'gain':12A 'higher':13A 'let':8A 'local':10A 'print':2A 'privileg':14A 'spooler':3A 'use':5A 'use-after-fre':4A 'user':11A 'window':1A","search_b":"'alreadi':40B 'already-author':39B 'attack':48B 'author':41B 'bug':31B 'code':52B 'compon':36B 'elev':58B 'free':30B 'gain':57B 'infrastructur':21B 'let':37B 'local':42B 'machin':55B 'print':23B,34B 'print-spool':22B 'privileg':46B 'rais':44B 'right':59B 'run':51B 'spooler':24B,35B 'use':28B 'use-after-fre':27B 'user':43B 'window':25B,33B","search_c":"'allow':68C 'attack':71C 'author':70C 'compon':67C 'elev':73C 'free':62C 'local':75C 'print':65C 'privileg':74C 'spooler':66C 'use':60C 'window':64C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:17:59+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-105567","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105567","severity":null,"published_at":"2026-11-10T19:17:59+00:00","modified_at":"2026-11-10T19:17:59+00:00","first_seen_at":"2026-11-10T19:24:20+00:00","fetched_at":"2026-11-10T19:24:20+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}