CVE-2026-67639 - Vulnerability Details - OpenCVE

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Vendors	Products
Microsoft Subscribe	Sql Server 2017 Subscribe Sql Server 2019 Subscribe Sql Server 2022 Subscribe Sql Server 2025 Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67639

History

Tue, 08 Sep 2026 17:30:00 +0000

Type	Values Removed	Values Added
Description		Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Title		Microsoft SQL Server Remote Code Execution Vulnerability
First Time appeared		Microsoft Microsoft sql Server 2017 Microsoft sql Server 2019 Microsoft sql Server 2022 Microsoft sql Server 2025
Weaknesses		CWE-122
CPEs		cpe:2.3:a:microsoft:sql_server_2017::-:::::x64: cpe:2.3:a:microsoft:sql_server_2019:::::::x64:* cpe:2.3:a:microsoft:sql_server_2022:::::::x64:* cpe:2.3:a:microsoft:sql_server_2025:::::::x64:*
Vendors & Products		Microsoft Microsoft sql Server 2017 Microsoft sql Server 2019 Microsoft sql Server 2022 Microsoft sql Server 2025
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67639
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-09-08T17:14:33.614Z

Updated: 2026-09-08T18:34:42.785Z

Reserved: 2026-07-29T22:49:19.796Z

Link: CVE-2026-67639

Vulnrichment

No data.

NVD

Status : Awaiting Analysis

Published: 2026-09-08T18:18:24.147

Modified: 2026-09-08T18:39:13.460

Link: CVE-2026-67639

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-122

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