{"id":"CVE-2026-67632","kind":"vulnerability","aliases":["CVE-2026-67632"],"related":[],"title":"SQL Server: heap buffer 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 authorized access run code over the network. The sources give no affected versions or fix.","severity":"high","cvss":8.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["runtime","sql-server","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:21:19+00:00","first_seen_at":"2026-11-10T19:25:16+00:00","triaged_at":"2026-11-10T19:26:06+00:00","updated_at":"2026-11-10T19:26:06+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-11-10T19:26:06Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"SQL Server: heap buffer 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 authorized access run code over the network. The sources give no affected versions or fix.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["sql-server","windows"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"Attacker runs code on the database server over the network","analyst_note":"Find Microsoft's security update guide entry for CVE-2026-67632 to get affected SQL Server versions, fixed builds and any mitigations.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Organizations running Microsoft SQL Server where users have some authorized access over the network. The sources do not list affected versions or configurations, so whether a given server is exposed is unknown.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000646,"input_tokens":4482,"output_tokens":395,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find Microsoft's security update guide entry for CVE-2026-67632 to get affected SQL Server versions, fixed builds and any mitigations.","search":"'-2026':13A,16A '-67632':14A,17A 'access':40B 'affect':50B 'allow':62C 'alreadi':37B 'attack':35B,65C 'author':8A,39B,64C 'base':26B,56C 'buffer':4A,27B,57C 'code':11A,42B,68C 'cve':12A,15A 'execut':67C 'fix':53B 'give':48B 'heap':3A,25B,55C 'heap-bas':24B,54C 'let':6A,33B 'microsoft':30B 'network':45B,71C 'overflow':5A,28B,58C 'run':10A,41B 'runtim':18B 'server':2A,21B,32B,61C 'sourc':47B 'sql':1A,20B,31B,60C 'sql-server':19B 'user':9A 'version':51B 'window':22B","nicknames":[],"mitigations":[],"who_affected":"Organizations running Microsoft SQL Server where users have some authorized access over the network. The sources do not list affected versions or configurations, so whether a given server is exposed is unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","runtime","sqlserver","windows"],"campaign_type":null,"search_a":"'-2026':13A,16A '-67632':14A,17A 'author':8A 'buffer':4A 'code':11A 'cve':12A,15A 'heap':3A 'let':6A 'overflow':5A 'run':10A 'server':2A 'sql':1A 'user':9A","search_b":"'access':40B 'affect':50B 'alreadi':37B 'attack':35B 'author':39B 'base':26B 'buffer':27B 'code':42B 'fix':53B 'give':48B 'heap':25B 'heap-bas':24B 'let':33B 'microsoft':30B 'network':45B 'overflow':28B 'run':41B 'runtim':18B 'server':21B,32B 'sourc':47B 'sql':20B,31B 'sql-server':19B 'version':51B 'window':22B","search_c":"'allow':62C 'attack':65C 'author':64C 'base':56C 'buffer':57C 'code':68C 'execut':67C 'heap':55C 'heap-bas':54C 'network':71C 'overflow':58C 'server':61C 'sql':60C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:19+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/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-2026-67632","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67632","severity":null,"published_at":"2026-11-10T19:21:19+00:00","modified_at":"2026-11-10T19:21:19+00:00","first_seen_at":"2026-11-10T19:25:16+00:00","fetched_at":"2026-11-10T19:25:16+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"}