# KB4074591: February 2018 cumulative update for Windows 10 1511

KB4074591, released February 13, 2018, fixes 24 CVEs across 6 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb4074591
- Platform: Microsoft
- Released: Feb 13, 2018
- Priority: Urgent (Closes CVE-2018-0860, exploitation more likely)
- CVEs: 24, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4074591

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Internet Explorer 11 on Windows 10 Version 1511 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-10-version-1511-for-32-bit-systems.md) |  | 10586.1417 |
| [Internet Explorer 11 on Windows 10 Version 1511 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-10-version-1511-for-x64-based-systems.md) |  | 10586.1417 |
| [Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/microsoft-edge-edgehtml-based-on-windows-10-version-1511-for-32-bit-systems.md) |  | 10586.1417 |
| [Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1511 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/microsoft-edge-edgehtml-based-on-windows-10-version-1511-for-x64-based-systems.md) |  | 10586.1417 |
| [Windows 10 Version 1511 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1511-for-32-bit-systems.md) |  | 10586.1417 |
| [Windows 10 Version 1511 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1511-for-x64-based-systems.md) |  | 10586.1417 |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2018-0860](https://patchblox.com/security/data/cve/CVE-2018-0860.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.6842 | More likely |
| [CVE-2018-0835](https://patchblox.com/security/data/cve/CVE-2018-0835.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.6531 | More likely |
| [CVE-2018-0837](https://patchblox.com/security/data/cve/CVE-2018-0837.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.6531 | More likely |
| [CVE-2018-0838](https://patchblox.com/security/data/cve/CVE-2018-0838.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.6531 | More likely |
| [CVE-2018-0834](https://patchblox.com/security/data/cve/CVE-2018-0834.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.5521 | More likely |
| [CVE-2018-0840](https://patchblox.com/security/data/cve/CVE-2018-0840.md) | Urgent | Microsoft Browsers | 4.2 | 0.5307 | More likely |
| [CVE-2018-0866](https://patchblox.com/security/data/cve/CVE-2018-0866.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.4364 | More likely |
| [CVE-2018-0859](https://patchblox.com/security/data/cve/CVE-2018-0859.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.1773 | More likely |
| [CVE-2018-0825](https://patchblox.com/security/data/cve/CVE-2018-0825.md) | Urgent | Microsoft Windows | 8.1 | 0.1648 | More likely |
| [CVE-2018-0857](https://patchblox.com/security/data/cve/CVE-2018-0857.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.1543 | More likely |
| [CVE-2018-0847](https://patchblox.com/security/data/cve/CVE-2018-0847.md) | Urgent | Microsoft Windows | 4.3 | 0.0593 | More likely |
| [CVE-2018-0826](https://patchblox.com/security/data/cve/CVE-2018-0826.md) | Urgent | Microsoft Windows | 7.0 | 0.0311 | More likely |
| [CVE-2018-0822](https://patchblox.com/security/data/cve/CVE-2018-0822.md) | Urgent | Microsoft Windows | 7.0 | 0.0263 | More likely |
| [CVE-2018-0821](https://patchblox.com/security/data/cve/CVE-2018-0821.md) | Urgent | Microsoft Windows | 5.3 | 0.0230 | More likely |
| [CVE-2018-0742](https://patchblox.com/security/data/cve/CVE-2018-0742.md) | Urgent | Windows Kernel | 7.0 | 0.0124 | More likely |
| [CVE-2018-0820](https://patchblox.com/security/data/cve/CVE-2018-0820.md) | Urgent | Microsoft Windows | 7.0 | 0.0124 | More likely |
| [CVE-2018-0844](https://patchblox.com/security/data/cve/CVE-2018-0844.md) | Urgent | Common Log File System Driver | 7.8 | 0.0122 | More likely |
| [CVE-2018-0846](https://patchblox.com/security/data/cve/CVE-2018-0846.md) | Urgent | Common Log File System Driver | 7.8 | 0.0122 | More likely |
| [CVE-2018-0756](https://patchblox.com/security/data/cve/CVE-2018-0756.md) | Urgent | Windows Kernel | 7.0 | 0.0117 | More likely |
| [CVE-2018-0842](https://patchblox.com/security/data/cve/CVE-2018-0842.md) | Urgent | Windows Kernel | 6.7 | 0.0102 | More likely |
| [CVE-2018-0832](https://patchblox.com/security/data/cve/CVE-2018-0832.md) | Routine | Windows Kernel | 4.7 | 0.0234 |  |
| [CVE-2018-0829](https://patchblox.com/security/data/cve/CVE-2018-0829.md) | Routine | Windows Kernel | 4.7 | 0.0204 |  |
| [CVE-2018-0830](https://patchblox.com/security/data/cve/CVE-2018-0830.md) | Routine | Windows Kernel | 4.7 | 0.0204 |  |
| [CVE-2018-0757](https://patchblox.com/security/data/cve/CVE-2018-0757.md) | Routine | Windows Kernel | 4.7 | 0.0158 |  |

---

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

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.