{"id":"CVE-2026-62903","kind":"vulnerability","aliases":["CVE-2026-62903"],"related":[],"title":"SQL Server: capture-replay authentication bypass lets attackers read data over network","description":"Authentication bypass by capture-replay in SQL Server allows an unauthorized attacker to disclose information over a network.","summary":"A flaw in Microsoft SQL Server lets an unauthorized attacker capture and replay authentication traffic to bypass login checks. The attacker can then disclose information over the network.","severity":"high","cvss":7.4,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["database","runtime","sql-server","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:21:17+00:00","first_seen_at":"2026-11-10T19:25:16+00:00","triaged_at":"2026-11-10T19:47:36+00:00","updated_at":"2026-11-10T19:47:36+00:00","category":"runtime","confidence":0.5,"triage":{"at":"2026-11-10T19:47:36Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"SQL Server: capture-replay authentication bypass lets attackers read data over network","impact":"medium","summary":"A flaw in Microsoft SQL Server lets an unauthorized attacker capture and replay authentication traffic to bypass login checks. The attacker can then disclose information over the network.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["sql-server","windows","database"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"Unauthorized attacker reads database information over the network","analyst_note":"Find affected SQL Server versions, fixed builds and the Microsoft advisory for CVE-2026-62903 on the NVD page.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Organizations running Microsoft SQL Server reachable over a network may be exposed. The sources do not state which versions or configurations are affected, so unknown.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000647,"input_tokens":4492,"output_tokens":395,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find affected SQL Server versions, fixed builds and the Microsoft advisory for CVE-2026-62903 on the NVD page.","search":"'-2026':15A,18A '-62903':16A,19A 'allow':63C 'attack':9A,35B,46B,66C 'authent':6A,39B,54C 'bypass':7A,42B,55C 'captur':4A,36B,58C 'capture-replay':3A,57C 'check':44B 'cve':14A,17A 'data':11A 'databas':20B 'disclos':49B,68C 'flaw':27B 'inform':50B,69C 'let':8A,32B 'login':43B 'microsoft':29B 'network':13A,53B,72C 'read':10A 'replay':5A,38B,59C 'runtim':21B 'server':2A,24B,31B,62C 'sql':1A,23B,30B,61C 'sql-server':22B 'traffic':40B 'unauthor':34B,65C 'window':25B","nicknames":[],"mitigations":[],"who_affected":"Organizations running Microsoft SQL Server reachable over a network may be exposed. The sources do not state which versions or configurations are affected, so unknown.","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':15A,18A '-62903':16A,19A 'attack':9A 'authent':6A 'bypass':7A 'captur':4A 'capture-replay':3A 'cve':14A,17A 'data':11A 'let':8A 'network':13A 'read':10A 'replay':5A 'server':2A 'sql':1A","search_b":"'attack':35B,46B 'authent':39B 'bypass':42B 'captur':36B 'check':44B 'databas':20B 'disclos':49B 'flaw':27B 'inform':50B 'let':32B 'login':43B 'microsoft':29B 'network':53B 'replay':38B 'runtim':21B 'server':24B,31B 'sql':23B,30B 'sql-server':22B 'traffic':40B 'unauthor':34B 'window':25B","search_c":"'allow':63C 'attack':66C 'authent':54C 'bypass':55C 'captur':58C 'capture-replay':57C 'disclos':68C 'inform':69C 'network':72C 'replay':59C 'server':62C 'sql':61C 'unauthor':65C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:17+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-62903","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62903","severity":null,"published_at":"2026-11-10T19:21:17+00:00","modified_at":"2026-11-10T19:21:17+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"}