CVE-2026-67388: Microsoft SQL Server Remote Code Execution Vulnerability
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Other sources
Microsoft SQL Server Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.4490.9Patch KB5122772 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.4275.2Patch KB5122768 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.4085.5Patch KB5122769 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.1135.8Patch KB5122770 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.0.2130.4Patch KB5122775 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.1200.5Patch KB5122771 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.0.3550.4Patch KB5122774 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.2190.7Patch KB5122773
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
An attacker must be authorized, meaning they need valid access to the affected SQL Server. Exploitation can be performed over the network and does not require user interaction.
What could a successful exploit allow?
A successful heap-based buffer overflow could allow the authorized attacker to execute code on the affected SQL Server. The supplied severity vector indicates high confidentiality, integrity, and availability impact.
Which SQL Server releases are listed as affected?
The listed software includes Microsoft SQL Server 2017, 2019, 2022, and 2025, including SQL Server 2017 CU 31, SQL Server 2019 CU 32, SQL Server 2022 CU 26, and SQL Server 2025 CU8.