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MicrosoftCVE-2026-67393

Buffer over-read in SQL Server

Medium6.5CVE-2026-67393 · Published Sep 8, 2026 · updated Sep 15, 2026

Buffer over-read in SQL Server allows an authorized attacker to disclose information over a network.

Microsoft advisory

Affected versions

PackageAffectedFixed in
Microsoft SQL Server 2017 (CU 31)
Product
>= 14.0.0, < 14.0.3550.414.0.3550.4
Microsoft SQL Server 2017 (GDR)
Product
>= 14.0.0, < 14.0.2130.414.0.2130.4
Microsoft SQL Server 2019 (CU 32)
Product
>= 15.0.0.0, < 15.0.4490.915.0.4490.9
Microsoft SQL Server 2019 (GDR)
Product
>= 15.0.0, < 15.0.2190.715.0.2190.7
Microsoft SQL Server 2022 (CU 26)
Product
>= 16.0.0.0, < 16.0.4275.216.0.4275.2
Microsoft SQL Server 2022 (GDR)
Product
>= 16.0.0, < 16.0.1200.516.0.1200.5
Microsoft SQL Server 2025 (CU8)
Product
>= 17.0.0.0, < 17.0.4085.517.0.4085.5
Microsoft SQL Server 2025 for x64-based Systems (GDR)
Product
>= 17.0.1050.2, < 17.0.1135.817.0.1135.8
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-126

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