{"id":"CVE-2026-112989","kind":"vulnerability","aliases":["CVE-2026-112989"],"related":[],"title":"Windows Servicing Stack Updates: local privilege escalation via untrusted pointer","description":"Untrusted pointer dereference in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.","summary":"Microsoft Servicing Stack Updates contain an untrusted pointer dereference that lets a logged-in local user with some access gain higher privileges. The sources give a CVSS score of 7.0 and no public exploitation.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Servicing Stack Updates","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["infrastructure","self-hosted","servicing-stack","windows"],"not_affected_if":["no-local-accounts"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:51+00:00","first_seen_at":"2026-11-10T19:24:37+00:00","triaged_at":"2026-11-10T19:53:27+00:00","updated_at":"2026-11-10T19:53:27+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-11-10T19:53:27Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Servicing Stack Updates: local privilege escalation via untrusted pointer","impact":"high","summary":"Microsoft Servicing Stack Updates contain an untrusted pointer dereference that lets a logged-in local user with some access gain higher privileges. The sources give a CVSS score of 7.0 and no public exploitation.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","servicing-stack","self-hosted"],"confidence":0.4,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains elevated privileges on the machine","analyst_note":"Check the NVD entry and Microsoft's security update guide for affected Servicing Stack versions and the fixed build.","how_to_check":"- unknown","plain_action":"","product_name":"Servicing Stack Updates","needs_analyst":true,"not_affected_if":["no-local-accounts"],"who_is_affected":"Only machines running the affected Servicing Stack Update component are exposed, and an attacker needs an authorized local account first. The sources do not list affected versions or configurations.","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000677,"input_tokens":4496,"output_tokens":454,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check the NVD entry and Microsoft's security update guide for affected Servicing Stack versions and the fixed build.","search":"'-112989':13A,16A '-2026':12A,15A '7.0':58B 'access':47B 'allow':70C 'attack':73C 'author':72C 'contain':32B 'cve':11A,14A 'cvss':55B 'derefer':36B,65C 'elev':75C 'escal':7A 'exploit':62B 'gain':48B 'give':53B 'higher':49B 'host':23B 'infrastructur':20B 'let':38B 'local':5A,43B,77C 'log':41B 'logged-in':40B 'microsoft':28B 'pointer':10A,35B,64C 'privileg':6A,50B,76C 'public':61B 'score':56B 'self':22B 'self-host':21B 'servic':2A,25B,29B,67C 'servicing':17A 'servicing-stack':24B 'sourc':52B 'stack':3A,18A,26B,30B,68C 'untrust':9A,34B,63C 'updat':4A,31B,69C 'updates':19A 'user':44B 'via':8A 'window':1A,27B","nicknames":[],"mitigations":[],"who_affected":"Only machines running the affected Servicing Stack Update component are exposed, and an attacker needs an authorized local account first. The sources do not list affected versions or configurations.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["servicingstackupdates","stackupdates"],"ptokens":["servicing","stack","updates"],"labels":["high","infrastructure","selfhosted","servicingstack","vendor","windows"],"campaign_type":null,"search_a":"'-112989':13A,16A '-2026':12A,15A 'cve':11A,14A 'escal':7A 'local':5A 'pointer':10A 'privileg':6A 'servic':2A 'servicing':17A 'stack':3A,18A 'untrust':9A 'updat':4A 'updates':19A 'via':8A 'window':1A","search_b":"'7.0':58B 'access':47B 'contain':32B 'cvss':55B 'derefer':36B 'exploit':62B 'gain':48B 'give':53B 'higher':49B 'host':23B 'infrastructur':20B 'let':38B 'local':43B 'log':41B 'logged-in':40B 'microsoft':28B 'pointer':35B 'privileg':50B 'public':61B 'score':56B 'self':22B 'self-host':21B 'servic':25B,29B 'servicing-stack':24B 'sourc':52B 'stack':26B,30B 'untrust':34B 'updat':31B 'user':44B 'window':27B","search_c":"'allow':70C 'attack':73C 'author':72C 'derefer':65C 'elev':75C 'local':77C 'pointer':64C 'privileg':76C 'servic':67C 'stack':68C 'untrust':63C 'updat':69C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:51+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-2026-112989","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112989","severity":null,"published_at":"2026-11-10T19:18:51+00:00","modified_at":"2026-11-10T19:18:51+00:00","first_seen_at":"2026-11-10T19:24:37+00:00","fetched_at":"2026-11-10T19:24:37+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"}