---
id: CVE-2026-54118
title: Microsoft SQL Server Remote Code Execution Vulnerability
summary: >-
  Deserialization of untrusted data in SQL Server allows an unauthorized
  attacker to execute code over a network.
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-502
vendor: Microsoft
product: Microsoft SQL Server 2016 Service Pack 3 (GDR)
affected:
  - sql_server_2016_service_pack_3_gdr >= 13.0.0 < 13.0.6500.1
  - >-
    sql_server_2016_service_pack_3_azure_connect_feature_pack >= 13.0.0 <
    13.0.7095.1
  - sql_server_2017_cu_31 >= 14.0.0 < 14.0.3540.1
  - sql_server_2017_gdr >= 14.0.0 < 14.0.2120.1
  - sql_server_2019_cu_32 >= 15.0.0.0 < 15.0.4480.2
  - sql_server_2019_gdr >= 15.0.0 < 15.0.2180.2
  - sql_server_2022_gdr >= 16.0.0 < 16.0.1190.2
  - sql_server_2022_for_x64-based_systems_cu_25 >= 16.0.4260.1 < 16.0.4262.2
  - sql_server_2025_cu_6 >= 17.0.4060.2 < 17.0.4060.2
  - sql_server_2025_for_x64-based_systems_gdr >= 17.0.1050.2 < 17.0.1125.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-07-15T04:00:44.039215Z'
published: '2026-07-14'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T18:20:23.865Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-54118'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54118'
    label: Microsoft SQL Server Remote Code Execution Vulnerability
tags:
  - cve.org
epss: 0.01532
epssPercentile: 0.73706
ingestedAt: '2026-09-08T17:06:31.929Z'
---

## Overview

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

## Affected

- `sql_server_2016_service_pack_3_gdr >= 13.0.0 < 13.0.6500.1`
- `sql_server_2016_service_pack_3_azure_connect_feature_pack >= 13.0.0 < 13.0.7095.1`
- `sql_server_2017_cu_31 >= 14.0.0 < 14.0.3540.1`
- `sql_server_2017_gdr >= 14.0.0 < 14.0.2120.1`
- `sql_server_2019_cu_32 >= 15.0.0.0 < 15.0.4480.2`
- `sql_server_2019_gdr >= 15.0.0 < 15.0.2180.2`
- `sql_server_2022_gdr >= 16.0.0 < 16.0.1190.2`
- `sql_server_2022_for_x64-based_systems_cu_25 >= 16.0.4260.1 < 16.0.4262.2`
- `sql_server_2025_cu_6 >= 17.0.4060.2 < 17.0.4060.2`
- `sql_server_2025_for_x64-based_systems_gdr >= 17.0.1050.2 < 17.0.1125.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.