# CVE-2025-48802: Windows SMB Server Spoofing Vulnerability

CVE-2025-48802 is fixed in 7 products on 1 platform, first by KB5062552, released July 8, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-48802
- Priority: Routine
- CVSS: 6.5 (Important)
- EPSS: 0.0090
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Jul 8, 2025
- Weakness: Improper Certificate Validation
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48802

## Description

<p>Improper certificate validation in Windows SMB allows an authorized attacker to perform spoofing over a network.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Windows 11 Version 22H2 for ARM64-based Systems |  | [KB5062552](https://patchblox.com/security/data/fix/microsoft/kb5062552.md) | Jul 8, 2025 |
| Microsoft | Windows 11 Version 22H2 for x64-based Systems |  | [KB5062552](https://patchblox.com/security/data/fix/microsoft/kb5062552.md) | Jul 8, 2025 |
| Microsoft | Windows 11 Version 23H2 for ARM64-based Systems |  | [KB5062552](https://patchblox.com/security/data/fix/microsoft/kb5062552.md) | Jul 8, 2025 |
| Microsoft | Windows 11 Version 23H2 for x64-based Systems |  | [KB5062552](https://patchblox.com/security/data/fix/microsoft/kb5062552.md) | Jul 8, 2025 |
| Microsoft | Windows Server 2022 | 20348.3932 | [KB5062572](https://patchblox.com/security/data/fix/microsoft/kb5062572.md) | Jul 8, 2025 |
| Microsoft | Windows Server 2022 (Server Core installation) | 20348.3932 | [KB5062572](https://patchblox.com/security/data/fix/microsoft/kb5062572.md) | Jul 8, 2025 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 25398.1732 | [KB5062570](https://patchblox.com/security/data/fix/microsoft/kb5062570.md) | Jul 8, 2025 |

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Data as of 2026-11-08T00:53:09Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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