CVE-2026-47297

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Remote Code Execution in SQL Server via Deserialization

Publication date: 2026-09-08

Last updated on: 2026-09-09

Assigner: Microsoft Corporation

Description

Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-09

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-47297

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	sql_server	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-502	The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

Executive Summary

This vulnerability involves deserialization of untrusted data in SQL Server. An unauthorized attacker can exploit this to execute arbitrary code over a network without needing authentication.

Impact Analysis

An attacker could gain control of your SQL Server instance, leading to data theft, manipulation, or disruption of services. This could result in unauthorized access to sensitive databases and potential system compromise.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Non-compliance may result in legal penalties and reputational damage.

Mitigation Strategies

Apply the latest security updates from Microsoft for SQL Server immediately to address the deserialization vulnerability. Monitor Microsoft's update guide for patches and follow their recommended mitigation steps.

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