{"id":"CVE-2026-88111","kind":"vulnerability","aliases":["CVE-2026-88111"],"related":[],"title":"Microsoft SQL Server: heap overflow lets an authorized user run code","description":"Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.","summary":"A heap-based buffer overflow in Microsoft SQL Server lets an attacker who already has valid access run code over the network. The sources give no affected versions or fix details.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["database","runtime","sql-server","windows"],"not_affected_if":["no-sql-server-installed"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:21:26+00:00","first_seen_at":"2026-11-10T19:25:18+00:00","triaged_at":"2026-11-10T19:42:59+00:00","updated_at":"2026-11-10T19:42:59+00:00","category":"runtime","confidence":0.5,"triage":{"at":"2026-11-10T19:42:59Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft SQL Server: heap overflow lets an authorized user run code","impact":"high","summary":"A heap-based buffer overflow in Microsoft SQL Server lets an attacker who already has valid access run code over the network. The sources give no affected versions or fix details.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["sql-server","windows","database"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"attacker runs code on the database server over the network","analyst_note":"Find affected SQL Server versions, patch KB and fixed builds from the Microsoft Security Response Center entry for CVE-2026-88111.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-sql-server-installed"],"who_is_affected":"Organizations running Microsoft SQL Server reachable over a network. The sources do not list affected versions or configurations, so exposure cannot be confirmed from them. Systems where SQL Server is not running can skip it.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000658,"input_tokens":4482,"output_tokens":419,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find affected SQL Server versions, patch KB and fixed builds from the Microsoft Security Response Center entry for CVE-2026-88111.","search":"'-2026':13A,16A '-88111':14A,17A 'access':41B 'affect':51B 'allow':64C 'alreadi':38B 'attack':36B,67C 'author':8A,66C 'base':27B,58C 'buffer':28B,59C 'code':11A,43B,70C 'cve':12A,15A 'databas':18B 'detail':55B 'execut':69C 'fix':54B 'give':49B 'heap':4A,26B,57C 'heap-bas':25B,56C 'let':6A,34B 'microsoft':1A,31B 'network':46B,73C 'overflow':5A,29B,60C 'run':10A,42B 'runtim':19B 'server':3A,22B,33B,63C 'sourc':48B 'sql':2A,21B,32B,62C 'sql-server':20B 'user':9A 'valid':40B 'version':52B 'window':23B","nicknames":[],"mitigations":[],"who_affected":"Organizations running Microsoft SQL Server reachable over a network. The sources do not list affected versions or configurations, so exposure cannot be confirmed from them. Systems where SQL Server is not running can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["database","high","runtime","sqlserver","windows"],"campaign_type":null,"search_a":"'-2026':13A,16A '-88111':14A,17A 'author':8A 'code':11A 'cve':12A,15A 'heap':4A 'let':6A 'microsoft':1A 'overflow':5A 'run':10A 'server':3A 'sql':2A 'user':9A","search_b":"'access':41B 'affect':51B 'alreadi':38B 'attack':36B 'base':27B 'buffer':28B 'code':43B 'databas':18B 'detail':55B 'fix':54B 'give':49B 'heap':26B 'heap-bas':25B 'let':34B 'microsoft':31B 'network':46B 'overflow':29B 'run':42B 'runtim':19B 'server':22B,33B 'sourc':48B 'sql':21B,32B 'sql-server':20B 'valid':40B 'version':52B 'window':23B","search_c":"'allow':64C 'attack':67C 'author':66C 'base':58C 'buffer':59C 'code':70C 'execut':69C 'heap':57C 'heap-bas':56C 'network':73C 'overflow':60C 'server':63C 'sql':62C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:26+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/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-2026-88111","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88111","severity":null,"published_at":"2026-11-10T19:21:26+00:00","modified_at":"2026-11-10T19:21:26+00:00","first_seen_at":"2026-11-10T19:25:18+00:00","fetched_at":"2026-11-10T19:25:18+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"}