CVE-2026-67643: Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

PriorityP263high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

0.83%

55.5th percentile

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
microsoft	microsoft_sql_server_2022	>= 16.0.0 < 16.0.1200.5	16.0.1200.5
microsoft	microsoft_sql_server_2022	>= 16.0.0.0 < 16.0.4275.2	16.0.4275.2
microsoft	microsoft_sql_server_2025	>= 17.0.0.0 < 17.0.4085.5	17.0.4085.5
microsoft	microsoft_sql_server_2025_for_x64-based_systems	>= 17.0.1050.2 < 17.0.1135.8	17.0.1135.8

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