Vulnerability Description
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
CVSS Score
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Sql Server 2016 | >= 13.0.6300.2, < 13.0.6500.1 |
| Microsoft | Sql Server 2017 | >= 14.0.1000.169, < 14.0.2120.1 |
| Microsoft | Sql Server 2019 | >= 15.0.2000.5, < 15.0.2180.2 |
| Microsoft | Sql Server 2022 | >= 16.0.1000.6, < 16.0.1190.2 |
| Microsoft | Sql Server 2025 | >= 17.0.1000.7, < 17.0.1125.2 |
Related Weaknesses (CWE)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54118PatchVendor Advisory
FAQ
What is CVE-2026-54118?
CVE-2026-54118 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
How severe is CVE-2026-54118?
CVE-2026-54118 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-54118?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Sql Server 2016, Microsoft Sql Server 2017, Microsoft Sql Server 2019, Microsoft Sql Server 2022, Microsoft Sql Server 2025.