Microsoft SQL Server: Information disclosure through buffer over-read
Summary
A buffer over-read in Microsoft SQL Server allows an authorized attacker with low privileges and network access to disclose information. The CVE record rates it CVSS 6.5 (Medium), with impact on confidentiality only. No exploitation in the wild or public proof of concept is known.
Affected
- 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 CU31: 14.0.3570.2 (KB5132746)
- SQL Server 2025 CU10: 17.0.5045.3 (KB5129299)
- Other branches: Unknown; confirm the fixed build in the MSRC update guide.
Workaround
- Unknown. No CVE-specific workaround is documented; apply the cumulative or GDR update for your branch.
- Restrict database access to trusted networks and limit accounts with login rights.
Exploitation
- Not known to be exploited in the wild, per the sources reviewed.
- No public proof of concept found. Rapid7 rates it 'Exploitation Less Likely'.
Our recommendation
- Identify all SQL Server instances and their build numbers.
- Install the cumulative or GDR update for each branch from the November 10, 2026 release, starting with internet-facing or multi-user servers.
- Verify the fixed builds for 2019, 2022 and 2025 GDR in the MSRC update guide before rollout.
- Not an emergency unless SQL Server is reachable from the internet; include it in the regular patch cycle.
Information from Microsoft (Patch Tuesday November 2026)
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- MSRC Security Update Guide: CVE-2026-116935 msrc.microsoft.com
- KB5129299: SQL Server 2025 CU10 (November 2026) support.microsoft.com
- KB5132746: SQL Server 2017 CU31 (November 2026) support.microsoft.com
- Strix AI: CVE-2026-116935 www.strix.ai
- Senserva: KB5132746 tracker senserva.com
- Rapid7: Patch Tuesday November 2026 www.rapid7.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, 12:15.
Original description (NVD)
Buffer over-read 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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