CVE-2026-78441: CWE-125: Out-of-bounds Read in Microsoft Microsoft SQL Server 2017 (CU 31)
Description
Out-of-bounds read in Windows OLE DB allows an unauthorized attacker to disclose information over a network.
CVSS v3.1
Score 6.5medium
Affected software
Microsoft
Microsoft SQL Server 2017 (CU 31)
Microsoft
Microsoft SQL Server 2017 (GDR)
Microsoft
Microsoft SQL Server 2019 (CU 32)
Microsoft
Microsoft SQL Server 2019 (GDR)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds read in the Windows OLE DB component of Microsoft SQL Server 2017 (CU 31). Exploitation can lead to unauthorized information disclosure over a network. The CVSS 3.1 vector indicates the attack requires network access with low complexity, no privileges, and user interaction. The impact is limited to confidentiality with no integrity or availability impact. Microsoft has published an official fix for affected versions.
Potential Impact
An attacker can exploit this vulnerability remotely without privileges to disclose sensitive information from the affected system. There is no impact on system integrity or availability. The vulnerability could lead to exposure of confidential data over the network.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users should apply the security update provided by Microsoft to affected versions of SQL Server 2017 (CU 31) to remediate the issue. No additional mitigations are required once the patch is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-24T16:21:50.286Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78441","vendor":"Microsoft"}]
Threat ID: 6aa0455eacd9273b49faa0f1
Added to database: 09/08/2026, 17:26:54 UTC
Last enriched: 10/14/2026, 21:59:43 UTC
Last updated: 10/24/2026, 03:05:11 UTC
Views: 75
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