CVE-2026-62903
Microsoft.Data.SqlClient Information Disclosure Vulnerability
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
Authentication bypass by capture-replay in SQL Server allows an unauthorized attacker to disclose information over a network.
| Vendor | microsoft |
| Product | microsoft.data.sqlclient 6.1 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Nov 10, 2026 |
| Last Updated | Nov 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:P/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Microsoft.Data.SqlClient 6.1
1.0.0.0 < 6.1.7
Microsoft / Microsoft.Data.SqlClient 7.0
1.0.0.0 < 7.0.3
Microsoft / Microsoft.Data.SqlClient 7.1
1.0.0.0 < 7.1.0-preview3