CVE-2026-67388

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code 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-2026-67388	Patch Vendor Advisory

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, 13:00

Type	Values Removed	Values Added
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67388 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67388 - Patch, Vendor Advisory
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:*
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 13:00

NVD link : CVE-2026-67388

Mitre link : CVE-2026-67388

CVE.ORG link : CVE-2026-67388

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

{"id": "CVE-2026-67388", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-67388", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-09T04:23:51.555250Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": "Microsoft SQL Server 2017 (CU 31)", "versions": [{"status": "affected", "version": "14.0.0", "lessThan": "14.0.3550.4", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2017 (GDR)", "versions": [{"status": "affected", "version": "14.0.0", "lessThan": "14.0.2130.4", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2019 (CU 32)", "versions": [{"status": "affected", "version": "15.0.0.0", "lessThan": "15.0.4490.9", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2019 (GDR)", "versions": [{"status": "affected", "version": "15.0.0", "lessThan": "15.0.2190.7", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 (CU 26)", "versions": [{"status": "affected", "version": "16.0.0.0", "lessThan": "16.0.4275.2", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"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": "2026-09-08T18:18:22.263", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-67388", "tags": ["Patch", "Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-122"}]}], "descriptions": [{"lang": "en", "value": "Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network."}], "lastModified": "2026-09-16T13:00:54.547", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "3207B09A-49E7-43D5-88B6-6ECF886B2E96", "versionEndExcluding": "14.0.2130.4"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "E409F829-1995-4F4F-9103-F718E929C482", "versionEndExcluding": "14.0.3550.4", "versionStartIncluding": "14.0.3006.16"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "799073C2-2213-4F34-8F07-D6C10AC00578", "versionEndExcluding": "15.0.2190.7"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "5517BD13-C554-4318-8D4F-FBCC90A628DB", "versionEndExcluding": "15.0.4490.9", "versionStartIncluding": "15.0.4003.23"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "21EA6405-BD37-4487-85FD-1B9CCCCF93F0", "versionEndExcluding": "16.0.1200.5"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "C76C3735-9E01-4F1A-98D3-29B9072C69D2", "versionEndExcluding": "16.0.4275.2", "versionStartIncluding": "16.0.4003.1"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "4117EB69-994D-4A8D-85EC-5AC12DF66DBD", "versionEndExcluding": "17.0.1135.8"}, {"criteria": "cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "1408DECC-BC22-4F27-8C49-C608FBF27FED", "versionEndExcluding": "17.0.4085.5", "versionStartIncluding": "17.0.4006.2"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}