CVE-2026-67381

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

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67381	Vendor Advisory Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:sql_server_2017:::::::x64:*
	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_2019:::::::x64:*
	cpe:2.3:a:microsoft:sql_server_2022:::::::x64:*
	cpe:2.3:a:microsoft:sql_server_2022:::::::x64:*
	cpe:2.3:a:microsoft:sql_server_2025:::::::x64:*
	cpe:2.3:a:microsoft:sql_server_2025:::::::x64:*

History

16 Sep 2026, 12:57

Type	Values Removed	Values Added
CPE		cpe:2.3:a:microsoft:sql_server_2025:::::::x64:* cpe:2.3:a:microsoft:sql_server_2022:::::::x64:* cpe:2.3:a:microsoft:sql_server_2019:::::::x64:* cpe:2.3:a:microsoft:sql_server_2017:::::::x64:*
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67381 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67381 - Vendor Advisory, Patch
First Time		Microsoft Microsoft sql Server 2025 Microsoft sql Server 2019 Microsoft sql Server 2022 Microsoft sql Server 2017

Information

Published : 2026-09-08 18:18

Updated : 2026-09-16 12:57

NVD link : CVE-2026-67381

Mitre link : CVE-2026-67381

CVE.ORG link : CVE-2026-67381

JSON object : View

Products Affected

microsoft

sql_server_2017
sql_server_2022
sql_server_2025
sql_server_2019

CWE

CWE-122

Heap-based Buffer Overflow

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{"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 (GDR)", "versions": [{"status": "affected", "version": "16.0.0", "lessThan": "16.0.1200.5", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 (CU8)", "versions": [{"status": "affected", "version": "17.0.0.0", "lessThan": "17.0.4085.5", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 for x64-based Systems (GDR)", "versions": [{"status": "affected", "version": "17.0.1050.2", "lessThan": "17.0.1135.8", "versionType": "custom"}], "platforms": ["x64-based Systems"]}]}], "published": "2026-09-08T18:18:21.603", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67381", "tags": ["Vendor Advisory", "Patch"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", 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