Microsoft SQL Server: Information disclosure via uninitialized resource
Summary
Microsoft SQL Server contains a use of an uninitialized resource that allows information disclosure. An authenticated attacker with low privileges and network access to the server can read data they should not see, with high confidentiality impact and no user interaction required. The practical risk lies mainly with insiders or compromised application or service accounts, not with unauthenticated internet attackers. Microsoft has released fixes in its November 2026 updates.
Affected
- SQL Server 2017 (GDR): 14.0.0 before 14.0.2150.2
- SQL Server 2017 for x64-based Systems (CU31): 14.0.3006.16 before 14.0.3570.2
- SQL Server 2019 (GDR): 15.0.0 before 15.0.2210.4
- SQL Server 2019 for x64-based Systems (CU32): 15.0.4003.23 before 15.0.4510.2
- SQL Server 2022 (GDR): 16.0.0 before 16.0.1220.3
- SQL Server 2022 for x64-based Systems (CU27): 16.0.4003.1 before 16.0.4315.2
- SQL Server 2025 CU10: 17.0.4006.0 before 17.0.5045.3
- SQL Server 2025 for x64-based Systems (GDR): 17.0.1050.2 before 17.0.1155.3
Fixed in
- SQL Server 2017 (GDR): 14.0.2150.2 (KB5132749)
- SQL Server 2017 for x64-based Systems (CU31): 14.0.3570.2 (KB5132746)
- SQL Server 2019 (GDR): 15.0.2210.4 (KB5132751)
- SQL Server 2019 for x64-based Systems (CU32): 15.0.4510.2 (KB5132745)
- SQL Server 2022 (GDR): 16.0.1220.3 (per secondary source, KB not verified)
- SQL Server 2022 for x64-based Systems (CU27): 16.0.4315.2 (per secondary source, KB not verified)
- SQL Server 2025 CU10: 17.0.5045.3 (KB not verified)
- SQL Server 2025 for x64-based Systems (GDR): 17.0.1155.3 (KB5132748)
Workaround
- No vendor-documented workaround found.
- Installing the security update is the stated remedy.
- General hardening (own suggestion): restrict network access to SQL Server and limit database accounts to the minimum required.
Exploitation
- Not known to be exploited in the wild.
- Rapid7 rates it 'Exploitation Less Likely' and it is not publicly disclosed.
- No public proof of concept found; VulDB lists no exploit as available.
- EPSS: Unknown.
Our recommendation
- Install the November 2026 security update for your SQL Server version during the next regular maintenance window.
- Check your installed build (for example with SELECT @@VERSION) and compare it with the fixed versions above.
- Make sure SQL Server is not reachable from the internet and restrict network access to it.
- Review service and application accounts with database access and monitor for unusual queries or logins.
Information from Microsoft (Patch Tuesday November 2026)
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- CVE Record CVE-2026-67382 (CNA record) www.cve.org
- MSRC Security Update Guide: CVE-2026-67382 msrc.microsoft.com
- Microsoft KB5132749: SQL Server 2017 GDR, November 2026 support.microsoft.com
- Microsoft KB5132748: SQL Server 2025 GDR, November 2026 support.microsoft.com
- Rapid7: Patch Tuesday November 2026 (exploitation status) www.rapid7.com
- VulDB entry 435266 (mitigation, exploit status) vuldb.com
- Senserva KB 5132746 (secondary, exploitation status) senserva.com
- SQL Server build versions (secondary) sqlserverbuilds.blogspot.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 11:57.
Original description (NVD)
Use of uninitialized resource in SQL Server allows an authorized attacker to disclose information over a network.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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