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Privacy Statement Third-Party Cookies AcceptRejectManage cookies MSRC  Customer Guidance  Security Update Guide  Vulnerabilities  CVE-2026-67636 Microsoft SQL Server Remote Code Execution Vulnerability New On this page  CVE-2026-67636  Subscribe RSS PowerShell  API  CSAF Security Vulnerability Released: Sep 8, 2026 Assigning CNA Microsoft CVE.org link CVE-2026-67636  Impact Remote Code Execution Max Severity Critical Weakness CWE-125: Out-of-bounds Read CVSS Source Microsoft Vector String CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C Metrics CVSS:3.1 8.5 / 7.4  Base score metrics: 8.5 / Temporal score metrics: 7.4  Expand all  Collapse all Metric Value   Base score metrics(8) Attack Vector Network Attack Complexity High Privileges Required Low User Interaction None Scope Changed Confidentiality High Integrity High Availability High   Temporal score metrics(3) Exploit Code Maturity Unproven Remediation Level Official Fix Report Confidence Confirmed Please see Common Vulnerability Scoring System for more information on the definition of these metrics. Executive Summary Out-of-bounds read in SQL Server allows an authorized attacker to execute code over a network. Exploitability The following table provides an exploitability assessment for this vulnerability at the time of original publication. Publicly disclosed No Exploited No Exploitability assessment Exploitation Unlikely FAQ According to the CVSS metric, the attack complexity is high (AC:H). What does this mean for this vulnerability? An attacker would need specific conditions to be in place (i.e. particular protocol settings, or configurations, etc.) before an attack could succeed, which reduces the likelihood of widespread or opportunistic exploitation. How could an attacker exploit this vulnerability? An authenticated attacker could exploit this vulnerability by connecting to an affected SQL Server and submitting a specially crafted query or request that triggers a memory corruption condition, allowing the attacker to execute code on the server. Authentication is required; user interaction is not required. Acknowledgements Microsoft Red Team Microsoft recognizes the efforts of those in the security community who help us protect customers through coordinated vulnerability disclosure. See Acknowledgements for more information. Security Updates To determine the support lifecycle for your software, see the Microsoft Support Lifecycle. Release date Descending  Edit columns  Download  Filters  Product Family  Max Severity  Impact  Platform   Clear Release date  Product Platform Impact Max Severity Article Download Build Number Assigning CNA Title: Release date, Content: Sep 8, 2026 Microsoft SQL Server 2025 for x64-based Systems (CU8) - Remote Code Execution Critical Title: Knowledge Base Articles for Microsoft SQL Server 2025 for x64-based Systems (CU8), Content:, 1 link 5122769  Title: Download Security Update for Microsoft SQL Server 2025 for x64-based Systems (CU8), Content:, 1 link Security Update  Title: Build numbers, Content: 17.0.4085.5 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Microsoft SQL Server 2022 for x64-based Systems (CU 26) - Remote Code Execution Critical Title: Knowledge Base Articles for Microsoft SQL Server 2022 for x64-based Systems (CU 26), Content:, 1 link 5122768  Title: Download Security Update for Microsoft SQL Server 2022 for x64-based Systems (CU 26), Content:, 1 link Security Update  Title: Build numbers, Content: 16.0.4275.2 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Microsoft SQL Server 2019 for x64-based Systems (CU 32) - Remote Code Execution Critical Title: Knowledge Base Articles for Microsoft SQL Server 2019 for x64-based Systems (CU 32), Content:, 1 link 5122772  Title: Download Security Update for Microsoft SQL Server 2019 for x64-based Systems (CU 32), Content:, 1 link Security Update  Title: Build numbers, Content: 15.0.4490.9 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Microsoft SQL Server 2022 for x64-based Systems (GDR) - Remote Code Execution Critical Title: Knowledge Base Articles for Microsoft SQL Server 2022 for x64-based Systems (GDR), Content:, 1 link 5122771  Title: Download Security Update for Microsoft SQL Server 2022 for x64-based Systems (GDR), Content:, 1 link Security Update  Title: Build numbers, Content: 16.0.1200.5 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Microsoft SQL Server 2025 for x64-based Systems (GDR) - Remote Code Execution Critical Title: Knowledge Base Articles for Microsoft SQL Server 2025 for x64-based Systems (GDR), Content:, 1 link 5122770  Title: Download Security Update for Microsoft SQL Server 2025 for x64-based Systems (GDR), Content:, 1 link Security Update  Title: Build numbers, Content: 17.0.1135.8 Title: Assigning CNA, Content: Microsoft Title: Release date, Content: Sep 8, 2026 Microsoft SQL Server 2019 for x64-based Systems (GDR) - Remote Code Execution Critical Title: Knowledge Base Articles for Microsoft SQL Server 2019 for x64-based Systems (GDR), Content:, 1 link 5122773  Title: Download Security Update for Microsoft SQL Server 2019 for x64-based Systems (GDR), Content:, 1 link Security Update  Title: Build numbers, Content: 15.0.2190.7 Title: Assigning CNA, Content: Microsoft All results loaded Loaded all 6 rows Disclaimer The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. Revisions version revisionDate description 1.0 Sep 8, 2026 Information published.  How satisfied are you with the MSRC Security Update Guide? Rating  Broken  Bad  Below average  Average  Great!  Your Privacy Choices Consumer Health Privacy Privacy & Cookies