CVE-2026-77482: Microsoft SQL Server 2017

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

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

Affected products

• Microsoft SQL Server 2017: before 14.0.2130.4 (fixed in 14.0.2130.4); from 14.0.3006.16, before 14.0.3550.4 (fixed in 14.0.3550.4)
• Microsoft SQL Server 2019: before 15.0.2190.7 (fixed in 15.0.2190.7); from 15.0.4003.23, before 15.0.4490.9 (fixed in 15.0.4490.9)

Published 2026-09-08. Last modified 2026-09-15.