CVE-2026-67391 · Vendor
NO FIX YET
A heap-based buffer overflow in Microsoft SQL Server lets a user who already has access run code over the network. The attacker gets code execution on the database server if the flaw is exploited.
first public Nov 10, 2026 · 1 source
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Organizations running Microsoft SQL Server where attackers already hold valid credentials or accounts that can reach the server over the network. The sources do not name affected builds or fixed versions, so the exact exposure is unknown.
Not affected if auth-required, no-sql-server-installed
Who cares microsoft, sql-server, windows
SELECT @@VERSION and compare it with the fixed builds in Microsoft's advisory, which the sources do not listNo fix yet, per the sources.
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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