CVE-2026-54117: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft SQL Server 2025 (CU 6)
CVE-2026-54117 is a high-severity vulnerability in Microsoft SQL Server 2025 (CU 6) involving deserialization of untrusted data. This flaw allows an authorized attacker to execute code remotely over a network without user interaction. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-54117) affects Microsoft SQL Server 2025 (CU 6) version 17.0.4060.2 and is classified under CWE-502 (Deserialization of Untrusted Data). It enables an attacker with authorized access to execute arbitrary code remotely by exploiting unsafe deserialization mechanisms. The CVSS v3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected SQL Server instance, potentially leading to full compromise of the system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54117 to remediate this vulnerability.
CVE-2026-54117: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft SQL Server 2025 (CU 6)
Description
CVE-2026-54117 is a high-severity vulnerability in Microsoft SQL Server 2025 (CU 6) involving deserialization of untrusted data. This flaw allows an authorized attacker to execute code remotely over a network without user interaction. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-54117) affects Microsoft SQL Server 2025 (CU 6) version 17.0.4060.2 and is classified under CWE-502 (Deserialization of Untrusted Data). It enables an attacker with authorized access to execute arbitrary code remotely by exploiting unsafe deserialization mechanisms. The CVSS v3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected SQL Server instance, potentially leading to full compromise of the system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54117 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-11T20:33:37.835Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54117","vendor":"Microsoft"}]
Threat ID: 6a566f7b68715ace43e6baea
Added to database: 07/14/2026, 17:18:51 UTC
Last enriched: 07/15/2026, 01:04:01 UTC
Last updated: 07/15/2026, 01:23:49 UTC
Views: 4
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