# KB4103726: May 2018 security update

KB4103726, released May 8, 2018, fixes 12 CVEs across 2 products. 2 of them are being exploited (CVE-2018-8174); 2 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/microsoft/kb4103726
- Platform: Microsoft
- Released: May 8, 2018
- Priority: Patch now (Closes CVE-2018-8174, exploited (CISA KEV, ransomware))
- CVEs: 12, exploited: 2, on CISA KEV: 2
- Vendor advisory: https://support.microsoft.com/help/4103726

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [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) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2018-8174](https://patchblox.com/security/data/cve/CVE-2018-8174.md) | Patch now | Microsoft Windows | 7.5 | 0.8824 | CISA KEV, Ransomware |
| [CVE-2018-0824](https://patchblox.com/security/data/cve/CVE-2018-0824.md) | Patch now | Windows COM | 7.5 | 0.7304 | CISA KEV |
| [CVE-2018-0959](https://patchblox.com/security/data/cve/CVE-2018-0959.md) | Urgent | Windows Hyper-V | 7.6 | 0.0980 |  |
| [CVE-2018-8127](https://patchblox.com/security/data/cve/CVE-2018-8127.md) | Urgent | Windows Kernel | 4.7 | 0.0290 | More likely |
| [CVE-2018-8164](https://patchblox.com/security/data/cve/CVE-2018-8164.md) | Urgent | Microsoft Graphics Component | 7.0 | 0.0146 | More likely |
| [CVE-2018-8124](https://patchblox.com/security/data/cve/CVE-2018-8124.md) | Urgent | Microsoft Graphics Component | 7.0 | 0.0120 | More likely |
| [CVE-2018-8167](https://patchblox.com/security/data/cve/CVE-2018-8167.md) | Urgent | Common Log File System Driver | 7.0 | 0.0102 | More likely |
| [CVE-2018-0886](https://patchblox.com/security/data/cve/CVE-2018-0886.md) | High | Microsoft Windows | 7.1 | 0.8197 |  |
| [CVE-2018-8897](https://patchblox.com/security/data/cve/CVE-2018-8897.md) | High | Windows Kernel | 7.0 | 0.1849 |  |
| [CVE-2018-8166](https://patchblox.com/security/data/cve/CVE-2018-8166.md) | High | Windows Kernel | 7.0 | 0.0122 |  |
| [CVE-2018-8136](https://patchblox.com/security/data/cve/CVE-2018-8136.md) | Routine | Microsoft Windows | 6.5 | 0.2301 |  |
| [CVE-2017-11927](https://patchblox.com/security/data/cve/CVE-2017-11927.md) | Routine | Microsoft Windows | 4.3 | 0.0962 |  |

---

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