# KB5027271: June 2023 security update

KB5027271, released June 13, 2023, fixes 23 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/microsoft/kb5027271
- Platform: Microsoft
- Released: Jun 13, 2023
- Priority: Urgent (Closes CVE-2023-29371, exploitation more likely)
- CVEs: 23, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5027271

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [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-2023-29371](https://patchblox.com/security/data/cve/CVE-2023-29371.md) | Urgent | Windows Win32K | 7.8 | 0.0539 | More likely |
| [CVE-2023-29358](https://patchblox.com/security/data/cve/CVE-2023-29358.md) | Urgent | Windows GDI | 7.8 | 0.0473 | More likely |
| [CVE-2023-32015](https://patchblox.com/security/data/cve/CVE-2023-32015.md) | Urgent | Windows PGM | 9.8 | 0.0204 |  |
| [CVE-2023-29363](https://patchblox.com/security/data/cve/CVE-2023-29363.md) | Urgent | Windows PGM | 9.8 | 0.0194 |  |
| [CVE-2023-32014](https://patchblox.com/security/data/cve/CVE-2023-32014.md) | Urgent | Windows PGM | 9.8 | 0.0194 |  |
| [CVE-2023-29359](https://patchblox.com/security/data/cve/CVE-2023-29359.md) | Urgent | Windows Win32K | 7.8 | 0.0055 | More likely |
| [CVE-2023-32011](https://patchblox.com/security/data/cve/CVE-2023-32011.md) | High | Windows iSCSI | 7.5 | 0.0194 |  |
| [CVE-2023-29351](https://patchblox.com/security/data/cve/CVE-2023-29351.md) | High | Windows Group Policy | 8.1 | 0.0181 |  |
| [CVE-2023-29362](https://patchblox.com/security/data/cve/CVE-2023-29362.md) | High | Remote Desktop Client | 8.8 | 0.0135 |  |
| [CVE-2023-29372](https://patchblox.com/security/data/cve/CVE-2023-29372.md) | High | Microsoft WDAC OLE DB provider for SQL | 8.8 | 0.0135 |  |
| [CVE-2023-29373](https://patchblox.com/security/data/cve/CVE-2023-29373.md) | High | Windows ODBC Driver | 8.8 | 0.0135 |  |
| [CVE-2023-32021](https://patchblox.com/security/data/cve/CVE-2023-32021.md) | High | Windows SMB | 7.1 | 0.0120 |  |
| [CVE-2023-32022](https://patchblox.com/security/data/cve/CVE-2023-32022.md) | High | Windows Server Service | 7.6 | 0.0077 |  |
| [CVE-2023-29365](https://patchblox.com/security/data/cve/CVE-2023-29365.md) | High | Microsoft Windows Codecs Library | 7.8 | 0.0072 |  |
| [CVE-2023-29367](https://patchblox.com/security/data/cve/CVE-2023-29367.md) | High | Windows OLE | 7.8 | 0.0072 |  |
| [CVE-2023-32017](https://patchblox.com/security/data/cve/CVE-2023-32017.md) | High | Microsoft Printer Drivers | 7.8 | 0.0050 |  |
| [CVE-2023-29346](https://patchblox.com/security/data/cve/CVE-2023-29346.md) | High | Windows NTFS | 7.8 | 0.0049 |  |
| [CVE-2023-29364](https://patchblox.com/security/data/cve/CVE-2023-29364.md) | High | Windows Authentication Methods | 7.0 | 0.0037 |  |
| [CVE-2023-29368](https://patchblox.com/security/data/cve/CVE-2023-29368.md) | High | Windows Filtering | 7.0 | 0.0037 |  |
| [CVE-2023-29369](https://patchblox.com/security/data/cve/CVE-2023-29369.md) | Routine | Windows Remote Procedure Call Runtime | 6.5 | 0.0199 |  |
| [CVE-2023-29355](https://patchblox.com/security/data/cve/CVE-2023-29355.md) | Routine | Windows DHCP Server | 5.3 | 0.0133 |  |
| [CVE-2023-32016](https://patchblox.com/security/data/cve/CVE-2023-32016.md) | Routine | Windows Installer | 5.5 | 0.0067 |  |
| [CVE-2023-32020](https://patchblox.com/security/data/cve/CVE-2023-32020.md) | Routine | Role: DNS Server | 5.6 | 0.0066 |  |

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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

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