{"id":"CVE-2026-116707","kind":"vulnerability","aliases":["CVE-2026-116707"],"related":[],"title":"Windows: use-after-free in link-layer discovery lets local users gain privileges","description":"Use after free in Windows Link Layer Topology Discovery Protocol allows an authorized attacker to elevate privileges locally.","summary":"A memory-reuse bug in the Windows Link Layer Topology Discovery protocol stack lets an authorized local user elevate their privileges. An attacker who already has a foothold on the machine can gain higher rights.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["endpoints","infrastructure","windows"],"not_affected_if":["fully-patched-windows","no-local-untrusted-users"],"how_to_check":"- Check the installed Windows build with `winver` and compare it against Microsoft's security update guide entry for CVE-2026-116707\n- Confirm Windows Update reports the latest cumulative update installed","fix":null,"status":"open","published_at":"2026-11-10T19:19:12+00:00","first_seen_at":"2026-11-10T19:24:45+00:00","triaged_at":"2026-11-10T19:52:10+00:00","updated_at":"2026-11-10T19:52:10+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:52:10Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows: use-after-free in link-layer discovery lets local users gain privileges","impact":"high","summary":"A memory-reuse bug in the Windows Link Layer Topology Discovery protocol stack lets an authorized local user elevate their privileges. An attacker who already has a foothold on the machine can gain higher rights.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","endpoints"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level privileges on the machine","analyst_note":"Find the Microsoft Security Update Guide entry for CVE-2026-116707 to list affected Windows builds and the patch KB.","how_to_check":"- Check the installed Windows build with `winver` and compare it against Microsoft's security update guide entry for CVE-2026-116707\n- Confirm Windows Update reports the latest cumulative update installed\n- unknown beyond this: the sources do not name affected builds","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-untrusted-users","fully-patched-windows"],"who_is_affected":"Windows machines where a user already has a local account can use this flaw to gain higher privileges. Exposure depends on the Windows build; the sources do not name affected versions. Servers and workstations both run the affected component, and an attacker needs local access first.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000719,"input_tokens":4499,"output_tokens":539,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Update Guide entry for CVE-2026-116707 to list affected Windows builds and the patch KB.","search":"'-116707':18A,21A '-2026':17A,20A 'allow':71C 'alreadi':50B 'attack':48B,74C 'author':41B,73C 'bug':29B 'cve':16A,19A 'discoveri':10A,36B,69C 'elev':44B,76C 'endpoint':22B 'foothold':53B 'free':5A,63C 'gain':14A,58B 'higher':59B 'infrastructur':23B 'layer':9A,34B,67C 'let':11A,39B 'link':8A,33B,66C 'link-lay':7A 'local':12A,42B,78C 'machin':56B 'memori':27B 'memory-reus':26B 'privileg':15A,46B,77C 'protocol':37B,70C 'reus':28B 'right':60B 'stack':38B 'topolog':35B,68C 'use':3A,61C 'use-after-fre':2A 'user':13A,43B 'window':1A,24B,32B,65C","nicknames":[],"mitigations":[],"who_affected":"Windows machines where a user already has a local account can use this flaw to gain higher privileges. Exposure depends on the Windows build; the sources do not name affected versions. Servers and workstations both run the affected component, and an attacker needs local access first.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["endpoints","high","infrastructure","windows"],"campaign_type":null,"search_a":"'-116707':18A,21A '-2026':17A,20A 'cve':16A,19A 'discoveri':10A 'free':5A 'gain':14A 'layer':9A 'let':11A 'link':8A 'link-lay':7A 'local':12A 'privileg':15A 'use':3A 'use-after-fre':2A 'user':13A 'window':1A","search_b":"'alreadi':50B 'attack':48B 'author':41B 'bug':29B 'discoveri':36B 'elev':44B 'endpoint':22B 'foothold':53B 'gain':58B 'higher':59B 'infrastructur':23B 'layer':34B 'let':39B 'link':33B 'local':42B 'machin':56B 'memori':27B 'memory-reus':26B 'privileg':46B 'protocol':37B 'reus':28B 'right':60B 'stack':38B 'topolog':35B 'user':43B 'window':24B,32B","search_c":"'allow':71C 'attack':74C 'author':73C 'discoveri':69C 'elev':76C 'free':63C 'layer':67C 'link':66C 'local':78C 'privileg':77C 'protocol':70C 'topolog':68C 'use':61C 'window':65C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:19:12+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-2026-116707","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116707","severity":null,"published_at":"2026-11-10T19:19:12+00:00","modified_at":"2026-11-10T19:19:13+00:00","first_seen_at":"2026-11-10T19:24:45+00:00","fetched_at":"2026-11-10T19:24:45+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"}