Critical severity · published Jul 14, 2026
CVE-2026-54117
Microsoft SQL Server Remote Code Execution Vulnerability
9.8
CVSS
1.5%
EPSS
No
On KEV
Description
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 75% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
Microsoft SQL Server 2025 (CU 6) · Microsoft
17.0.4060.2 before 17.0.4060.2 · source: vendor
MS
Microsoft SQL Server 2025 for x64-based Systems (GDR) · Microsoft
17.0.1050.2 before 17.0.1125.2 · source: vendor
SS
Sql Server 2016 · Microsoft
13.0.6300.2 before 13.0.6500.1; 13.0.7000.253 before 13.0.7095.1 · source: NVD
SS
Sql Server 2017 · Microsoft
14.0.1000.169 before 14.0.2120.1; 14.0.3006.16 before 14.0.3540.1 · source: NVD
SS
Sql Server 2019 · Microsoft
15.0.2000.5 before 15.0.2180.2; 15.0.4003.23 before 15.0.4480.2 · source: NVD
SS
Sql Server 2022 · Microsoft
16.0.1000.6 before 16.0.1190.2; 16.0.4003.1 before 16.0.4262.2 · source: NVD
SS
Sql Server 2025 · Microsoft
17.0.1000.7 before 17.0.1125.2; 17.0.4006.2 before 17.0.4060.2 · source: NVD
Affected product
MS
Microsoft SQL Server 2025 (CU 6)
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54117
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-54117
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54117
More from Microsoft SQL Server 2025 (CU 6)
9.8
CVE-2026-54118
Microsoft SQL Server Remote Code Execution Vulnerability
8.8
CVE-2026-47295
Microsoft SQL Server Elevation of Privilege Vulnerability
8.8
CVE-2026-55002
Microsoft SQL Server Elevation of Privilege Vulnerability
7.5
CVE-2026-47296
Microsoft SQL Server Elevation of Privilege Vulnerability
6.5
CVE-2026-54116
Microsoft SQL Server Information Disclosure Vulnerability