CVE-2026-54117: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft SQL Server 2025 (CU 6)
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-54117) in Microsoft SQL Server 2025 (CU 6) 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 processes. The CVSS v3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely over the network, potentially leading to full compromise of the affected SQL Server instance. The vulnerability impacts confidentiality, integrity, and availability of the system.
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
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-54117) in Microsoft SQL Server 2025 (CU 6) 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 processes. The CVSS v3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely over the network, potentially leading to full compromise of the affected SQL Server instance. The vulnerability impacts confidentiality, integrity, and availability of the system.
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: 08/13/2026, 15:21:21 UTC
Last updated: 08/27/2026, 22:52:12 UTC
Views: 105
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