CVE-2026-54118

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

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

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-2026-54118	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:sql_server_2016:::::::x64:*
	cpe:2.3:a:microsoft:sql_server_2016:::::::x64:*
	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

No history.

Information

Published : 2026-07-14 17:17

Updated : 2026-08-20 17:18

NVD link : CVE-2026-54118

Mitre link : CVE-2026-54118

CVE.ORG link : CVE-2026-54118

JSON object : View

Products Affected

microsoft

sql_server_2019
sql_server_2025
sql_server_2016
sql_server_2022
sql_server_2017

CWE

CWE-502

Deserialization of Untrusted Data

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"custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2019 (GDR)", "versions": [{"status": "affected", "version": "15.0.0", "lessThan": "15.0.2180.2", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 (GDR)", "versions": [{"status": "affected", "version": "16.0.0", "lessThan": "16.0.1190.2", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2022 for x64-based Systems (CU 25)", "versions": [{"status": "affected", "version": "16.0.4260.1", "lessThan": "16.0.4262.2", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 (CU 6)", "versions": [{"status": "affected", "version": "17.0.4060.2", "lessThan": "17.0.4060.2", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": "Microsoft SQL Server 2025 for x64-based Systems (GDR)", "versions": [{"status": "affected", "version": "17.0.1050.2", "lessThan": "17.0.1125.2", "versionType": "custom"}], "platforms": ["x64-based Systems"]}]}], "published": "2026-07-14T17:17:04.530", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54118", "tags": ["Patch", "Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-502"}]}], "descriptions": [{"lang": "en", "value": "Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network."}], "lastModified": "2026-08-20T17:18:16.353", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:sql_server_2016:*:*:*:*:*:*:x64:*", "vulnerable": true, "matchCriteriaId": "16F1E5AB-5877-45FF-AD6C-DE56AB80FA7F", "versionEndExcluding": "13.0.6500.1", "versionStartIncluding": "13.0.6300.2"}, {"criteria": 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