Summary
Deserialization of untrusted data in SQL Server allows an unauthorized attacker to execute code over a network.
Products covered
Microsoft SQL Server 2019 for x64-based Systems (GDR)
Microsoft SQL Server 2022 for x64-based Systems (GDR)
Microsoft SQL Server 2025 for x64-based Systems (GDR)
Microsoft SQL Server 2019 for x64-based Systems (CU 32)
Microsoft SQL Server 2025 for x64-based Systems (CU8)
Microsoft SQL Server 2022 for x64-based Systems (CU 26)
Remediation
Install KB5122773. Install KB5122771. Install KB5122770. Install KB5122772. Install KB5122769. Install KB5122768.
Vendor-listed fixes
15.0.2190.7
16.0.1200.5
17.0.1135.8
15.0.4490.9
17.0.4085.5
16.0.4275.2
CVEs in this advisory 1
What changed in later vendor updates
SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.
- Removed affected products: Microsoft SQL Server 2022 for x64-based Systems (CU 25), Microsoft SQL Server 2025 for x64-based Systems (CU6).
- Removed fixed versions: 16.0.4262.2, 17.0.4060.2.
- The vendor changed its remediation guidance.
Updates
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.