CVE-2026-54117

Microsoft SQL Server Remote Code Execution Vulnerability

CVE-2026-54117 is fixed in 2 products on 1 platform, first by KB5101346, released July 14, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent

CVSS

9.8

Critical

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0153

74th percentile

<p>Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.</p>

Where it's fixed

Product	Fix	Released
Microsoft
Microsoft SQL Server 2025 for x64-based Systems (CU6)	KB5101346	Jul 14, 2026
Microsoft SQL Server 2025 for x64-based Systems (GDR)	KB5102333	Jul 14, 2026

Details

Published
July 14, 2026
Weakness
Deserialization of Untrusted Data
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54117

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