# KB3135456: April 2016 security update

KB3135456, released April 12, 2016, fixes 3 CVEs across 5 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/microsoft/kb3135456
- Platform: Microsoft
- Released: Apr 12, 2016
- Priority: High (Closes CVE-2016-0088, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/3135456

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-x64-based-systems.md) |  |  |
| [Windows Server 2012](https://patchblox.com/security/data/product/microsoft/windows-server-2012.md) |  |  |
| [Windows Server 2012 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2012-server-core-installation.md) |  |  |
| [Windows Server 2012 R2](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2.md) |  |  |
| [Windows Server 2012 R2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2016-0088](https://patchblox.com/security/data/cve/CVE-2016-0088.md) | High | Windows Hyper-V | n/a | 0.0735 |  |
| [CVE-2016-0089](https://patchblox.com/security/data/cve/CVE-2016-0089.md) | High | Windows Hyper-V | n/a | 0.0333 |  |
| [CVE-2016-0090](https://patchblox.com/security/data/cve/CVE-2016-0090.md) | High | Windows Hyper-V | n/a | 0.0296 |  |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo