{"id":"CVE-2026-70003","kind":"vulnerability","aliases":["CVE-2026-70003"],"related":[],"title":"Microsoft JDBC Driver for SQL Server: signature check flaw lets attacker bypass security","description":"Improper verification of cryptographic signature in JDBC Driver for SQL Server allows an unauthorized attacker to bypass a security feature over a network.","summary":"The Microsoft JDBC Driver for SQL Server does not properly verify a cryptographic signature. An unauthorized attacker on the network can bypass a security feature that depends on that check.","severity":"high","cvss":8.7,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["java","jdbc","package","sql-server"],"not_affected_if":[],"how_to_check":"- Find the `mssql-jdbc` version in your Java project's dependencies (for example in `pom.xml` or `build.gradle`)","fix":null,"status":"open","published_at":"2026-11-10T19:21:20+00:00","first_seen_at":"2026-11-10T19:25:17+00:00","triaged_at":"2026-11-10T19:34:20+00:00","updated_at":"2026-11-10T19:34:20+00:00","category":"package","confidence":0.5,"triage":{"at":"2026-11-10T19:34:20Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft JDBC Driver for SQL Server: signature check flaw lets attacker bypass security","impact":"medium","summary":"The Microsoft JDBC Driver for SQL Server does not properly verify a cryptographic signature. An unauthorized attacker on the network can bypass a security feature that depends on that check.","audience":"developers","category":"package","nicknames":[],"who_cares":["java","sql-server","jdbc"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"attacker bypasses a signature-based security feature over the network","analyst_note":"Confirm affected driver versions, fixed version and which security feature the signature check guards, from the NVD entry and Microsoft's advisory.","how_to_check":"- Find the `mssql-jdbc` version in your Java project's dependencies (for example in `pom.xml` or `build.gradle`)\n- unknown","plain_action":"","product_name":"mssql-jdbc","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000668,"input_tokens":4505,"output_tokens":434,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Confirm affected driver versions, fixed version and which security feature the signature check guards, from the NVD entry and Microsoft's advisory.","search":"'-2026':15A,18A '-70003':16A,19A 'allow':67C 'attack':11A,42B,70C 'bypass':12A,47B,72C 'check':8A,55B 'cryptograph':38B,59C 'cve':14A,17A 'depend':52B 'driver':3A,29B,63C 'featur':50B,75C 'flaw':9A 'improp':56C 'java':20B 'jdbc':2A,21B,28B,62C 'let':10A 'microsoft':1A,27B 'network':45B,78C 'packag':22B 'proper':35B 'secur':13A,49B,74C 'server':6A,25B,32B,66C 'signatur':7A,39B,60C 'sql':5A,24B,31B,65C 'sql-server':23B 'unauthor':41B,69C 'verif':57C 'verifi':36B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"developers","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","java","jdbc","package","sqlserver"],"campaign_type":null,"search_a":"'-2026':15A,18A '-70003':16A,19A 'attack':11A 'bypass':12A 'check':8A 'cve':14A,17A 'driver':3A 'flaw':9A 'jdbc':2A 'let':10A 'microsoft':1A 'secur':13A 'server':6A 'signatur':7A 'sql':5A","search_b":"'attack':42B 'bypass':47B 'check':55B 'cryptograph':38B 'depend':52B 'driver':29B 'featur':50B 'java':20B 'jdbc':21B,28B 'microsoft':27B 'network':45B 'packag':22B 'proper':35B 'secur':49B 'server':25B,32B 'signatur':39B 'sql':24B,31B 'sql-server':23B 'unauthor':41B 'verifi':36B","search_c":"'allow':67C 'attack':70C 'bypass':72C 'cryptograph':59C 'driver':63C 'featur':75C 'improp':56C 'jdbc':62C 'network':78C 'secur':74C 'server':66C 'signatur':60C 'sql':65C 'unauthor':69C 'verif':57C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:20+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-70003","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70003","severity":null,"published_at":"2026-11-10T19:21:20+00:00","modified_at":"2026-11-10T19:21:20+00:00","first_seen_at":"2026-11-10T19:25:17+00:00","fetched_at":"2026-11-10T19:25:17+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"}