# KB5077466: March 2026 security update

KB5077466, released March 10, 2026, fixes 3 CVEs in Microsoft SQL Server 2025 for x64-based Systems (CU2). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb5077466
- Platform: Microsoft
- Released: Mar 10, 2026
- Priority: High (Closes CVE-2026-21262, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5077466

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft SQL Server 2025 for x64-based Systems (CU2)](https://patchblox.com/security/data/product/microsoft/microsoft-sql-server-2025-for-x64-based-systems-cu2.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-21262](https://patchblox.com/security/data/cve/CVE-2026-21262.md) | High | SQL Server | 8.8 | 0.0166 | Disclosed |
| [CVE-2026-26115](https://patchblox.com/security/data/cve/CVE-2026-26115.md) | High | SQL Server | 8.8 | 0.0125 |  |
| [CVE-2026-26116](https://patchblox.com/security/data/cve/CVE-2026-26116.md) | High | SQL Server | 8.8 | 0.0119 |  |

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Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo