CVE-2026-65674: Microsoft SQL Server Remote Code Execution Vulnerability
Deserialization of untrusted data 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 15.0.4500.2Patch KB5128494 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.4305.5Patch KB5126934 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.1145.4Patch KB5128492 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.2200.2Patch KB5128495 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.1210.3Patch KB5128493 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.5015.4Patch KB5126967
Event History
Frequently Asked Questions
Does exploitation require prior access to SQL Server?
Yes. The vulnerability is rated with low privileges required, so the attacker must be authorized before exploiting it. User interaction is not required.
Can this be exploited remotely?
Yes. The attack vector is network-based and has low attack complexity.
What level of impact could successful exploitation have?
Successful exploitation can result in code execution and is rated for high impact to confidentiality, integrity, and availability.