CVE-2026-47297: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft SQL Server 2019 (CU 32)
Description
CVE-2026-47297 is a high-severity vulnerability in Microsoft SQL Server 2019 (CU 32) involving deserialization of untrusted data. This flaw allows an unauthorized attacker to execute code remotely over a network. The vulnerability affects multiple versions of SQL Server 2019 and later branches prior to specific build numbers. An official fix is available from Microsoft.
CVSS v3.1
Score 8.1high
Affected software
Microsoft
Microsoft SQL Server 2019 (CU 32)
Microsoft
Microsoft SQL Server 2019 (GDR)
Microsoft
Microsoft SQL Server 2022 (CU 26)
Microsoft
Microsoft SQL Server 2022 (GDR)
Microsoft
Microsoft SQL Server 2025 (CU8)
Microsoft
Microsoft SQL Server 2025 for x64-based Systems (GDR)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-47297) is classified as CWE-502, indicating a deserialization of untrusted data issue in Microsoft SQL Server 2019 (CU 32). It enables remote code execution by processing malicious serialized input. The CVSS v3.1 score is 8.1, reflecting high impact on confidentiality, integrity, and availability. Affected versions include multiple build ranges across SQL Server 2019 and subsequent versions up to but excluding certain build numbers. Microsoft has released an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an attacker with no privileges and no user interaction to execute arbitrary code remotely on the affected SQL Server instance. This can lead to full compromise of the server, affecting confidentiality, integrity, and availability of data and services.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security updates provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47297 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-18T23:53:33.897Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47297","vendor":"Microsoft"}]
Threat ID: 6aa044c4acd9273b49fa5faf
Added to database: 09/08/2026, 17:24:20 UTC
Last enriched: 10/16/2026, 20:47:49 UTC
Last updated: 10/21/2026, 13:40:30 UTC
Views: 37
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