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Microsoft.Data.SqlClient Information Disclosure Vulnerability

Assessment

Authentication bypass by capture-replay in SQL Server allows an unauthorized attacker to disclose information over a network.

Severity
Important
CVSS base score
Not published
Impact
Information Disclosure
Exploitation detected
No known exploitation (MSRC assessment)
Exploitability
Exploitation Less Likely
Publicly disclosed
No (MSRC assessment)
EPSS · 30-day forecast
No EPSS score collected
Customer action
Required: follow the MSRC remediation guidance
More details
Public detection template
No Nuclei template is listed in the current collected catalog
Component
SQL Server
Weakness
CWE-294: Authentication Bypass by Capture-replay
Issued by
Microsoft
Published
10 Nov 2026 · November 2026
Last revised
10 Nov 2026

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

SQL Server
3 affected products
  • Microsoft.Data.SqlClient 6.1
  • Microsoft.Data.SqlClient 7.0
  • Microsoft.Data.SqlClient 7.1
Page history

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Field-level log (0)

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No retained field changes for this selection.

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 10 Nov 19:43 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current