Microsoft SQL Server: Information disclosure due to uninitialized resource
Summary
Microsoft SQL Server contains an information disclosure vulnerability (CWE-908) caused by the use of an uninitialized resource. An authenticated attacker with low privileges on the network can read information that should be protected. Confidentiality is affected, but integrity and availability are not.
Affected
- SQL Server 2017 GDR: 14.0.0 to before 14.0.2150.2
- SQL Server 2017 CU31 (x64): 14.0.3006.16 to before 14.0.3570.2
- SQL Server 2019 GDR: 15.0.0 to before 15.0.2210.4
- SQL Server 2019 CU32 (x64): 15.0.4003.23 to before 15.0.4510.2
- SQL Server 2022 GDR: 16.0.0 to before 16.0.1220.3
- SQL Server 2022 CU27 (x64): 16.0.4003.1 to before 16.0.4315.2
- SQL Server 2025 CU10: 17.0.4006.0 to before 17.0.5045.3
- SQL Server 2025 GDR (x64): 17.0.1050.2 to before 17.0.1155.3
Fixed in
- SQL Server 2017 GDR: 14.0.2150.2 (KB5132749)
- SQL Server 2017 CU31: 14.0.3570.2
- SQL Server 2019 GDR: 15.0.2210.4 (KB5132751)
- SQL Server 2019 CU32: 15.0.4510.2
- SQL Server 2022 GDR: 16.0.1220.3
- SQL Server 2022 CU27: 16.0.4315.2
- SQL Server 2025 CU10: 17.0.5045.3
- SQL Server 2025 GDR: 17.0.1155.3 (KB5132748)
The fixed builds for 2022 and 2025 CU10 should be confirmed on the MSRC page.
Workaround
Unknown.
Exploitation
- No evidence of exploitation in the wild found.
- No public proof of concept found.
- Rapid7 rates exploitation as less likely.
Our recommendation
- Install the November 2026 security update matching your SQL Server branch and build.
- Check your build with SELECT @@VERSION.
- Review accounts with login rights and remove unused accounts.
- Make sure the SQL Server port (default 1433) is not reachable from the internet.
- Prioritise the update if SQL Server is exposed to untrusted networks.
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-2026-118104 www.cve.org
- MSRC Security Update Guide CVE-2026-118104 msrc.microsoft.com
- KB5132749 SQL Server 2017 GDR November 2026 support.microsoft.com
- KB5132751 SQL Server 2019 GDR November 2026 support.microsoft.com
- KB5132748 SQL Server 2025 GDR November 2026 support.microsoft.com
- Rapid7 Patch Tuesday November 2026 www.rapid7.com
- Strix CVE-2026-118104 www.strix.ai
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, 12:15.
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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