CVE-2026-67389: CWE-125: Out-of-bounds Read in Microsoft Microsoft SQL Server 2022 (CU 26)
Description
CVE-2026-67389 is an out-of-bounds read vulnerability in Microsoft SQL Server 2022 (CU 26) that allows an authorized attacker to disclose information over a network. The vulnerability affects multiple specific builds of SQL Server 2022 versions 16.0 and 17.0 prior to certain fixed builds. It has a CVSS 3.1 base score of 6.5, indicating a medium severity level. An official fix is available from Microsoft.
CVSS v3.1
Score 6.5medium
Affected software
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 (CWE-125) involves an out-of-bounds read in Microsoft SQL Server 2022, which can be exploited by an authorized attacker to disclose sensitive information remotely over the network. The affected versions include specific ranges in the 16.0 and 17.0 branches prior to their respective fixed builds. Microsoft has published an official security update to address this issue.
Potential Impact
An authorized attacker can exploit this vulnerability to read memory outside the intended bounds, potentially disclosing sensitive information over the network. There is no impact on integrity or availability reported. No known exploits are currently observed in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security updates provided in the Microsoft advisory to remediate this vulnerability. Since this is not a cloud service, remediation requires patching the affected SQL Server installations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-29T14:57:03.842Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67389","vendor":"Microsoft"}]
Threat ID: 6aa044cbacd9273b49fa7b62
Added to database: 09/08/2026, 17:24:27 UTC
Last enriched: 10/16/2026, 20:51:20 UTC
Last updated: 10/21/2026, 13:40:30 UTC
Views: 25
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