# KB5004298: July 2021 security update

KB5004298, released July 13, 2021, fixes 49 CVEs across 5 products. 3 of them are being exploited (CVE-2021-34448); 3 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/microsoft/kb5004298
- Platform: Microsoft
- Released: Jul 13, 2021
- Priority: Patch now (Closes CVE-2021-34448, exploited (CISA KEV))
- CVEs: 49, exploited: 3, on CISA KEV: 3
- Vendor advisory: https://support.microsoft.com/help/5004298

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 8.1 for 32-bit systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-32-bit-systems.md) |  |  |
| [Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-x64-based-systems.md) |  |  |
| [Windows RT 8.1](https://patchblox.com/security/data/product/microsoft/windows-rt-8.1.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-2021-34448](https://patchblox.com/security/data/cve/CVE-2021-34448.md) | Patch now | Microsoft Scripting Engine | 6.8 | 0.4006 | CISA KEV |
| [CVE-2021-33771](https://patchblox.com/security/data/cve/CVE-2021-33771.md) | Patch now | Windows Kernel | 7.8 | 0.1017 | CISA KEV |
| [CVE-2021-31979](https://patchblox.com/security/data/cve/CVE-2021-31979.md) | Patch now | Windows Kernel | 7.8 | 0.0454 | CISA KEV |
| [CVE-2021-34494](https://patchblox.com/security/data/cve/CVE-2021-34494.md) | Urgent | Role: DNS Server | 8.8 | 0.0405 |  |
| [CVE-2021-33780](https://patchblox.com/security/data/cve/CVE-2021-33780.md) | Urgent | Role: DNS Server | 8.8 | 0.0271 | More likely |
| [CVE-2021-34497](https://patchblox.com/security/data/cve/CVE-2021-34497.md) | Urgent | Windows MSHTML Platform | 6.8 | 0.0215 |  |
| [CVE-2020-17049](https://patchblox.com/security/data/cve/CVE-2020-17049.md) | High | Microsoft Windows | 7.2 | 0.1379 |  |
| [CVE-2021-31183](https://patchblox.com/security/data/cve/CVE-2021-31183.md) | High | Windows TCP/IP | 7.5 | 0.0384 |  |
| [CVE-2021-34504](https://patchblox.com/security/data/cve/CVE-2021-34504.md) | High | Windows Address Book | 7.8 | 0.0347 |  |
| [CVE-2021-33788](https://patchblox.com/security/data/cve/CVE-2021-33788.md) | High | Windows Local Security Authority Subsystem Service (LSASS) | 7.5 | 0.0328 |  |
| [CVE-2021-34476](https://patchblox.com/security/data/cve/CVE-2021-34476.md) | High | Common Internet File System | 7.5 | 0.0328 |  |
| [CVE-2021-34442](https://patchblox.com/security/data/cve/CVE-2021-34442.md) | High | Role: DNS Server | 8.8 | 0.0317 |  |
| [CVE-2021-34492](https://patchblox.com/security/data/cve/CVE-2021-34492.md) | High | Windows PFX Encryption | 8.1 | 0.0247 | Disclosed |
| [CVE-2021-33749](https://patchblox.com/security/data/cve/CVE-2021-33749.md) | High | Role: DNS Server | 8.8 | 0.0242 |  |
| [CVE-2021-33750](https://patchblox.com/security/data/cve/CVE-2021-33750.md) | High | Role: DNS Server | 8.8 | 0.0242 |  |
| [CVE-2021-33752](https://patchblox.com/security/data/cve/CVE-2021-33752.md) | High | Role: DNS Server | 8.8 | 0.0242 |  |
| [CVE-2021-33756](https://patchblox.com/security/data/cve/CVE-2021-33756.md) | High | Role: DNS Server | 8.8 | 0.0241 |  |
| [CVE-2021-34525](https://patchblox.com/security/data/cve/CVE-2021-34525.md) | High | Role: DNS Server | 8.8 | 0.0225 |  |
| [CVE-2021-34441](https://patchblox.com/security/data/cve/CVE-2021-34441.md) | High | Microsoft Windows Media Foundation | 7.8 | 0.0222 |  |
| [CVE-2021-33786](https://patchblox.com/security/data/cve/CVE-2021-33786.md) | High | Windows Local Security Authority Subsystem Service (LSASS) | 8.1 | 0.0212 |  |
| [CVE-2021-34446](https://patchblox.com/security/data/cve/CVE-2021-34446.md) | High | Windows HTML Platform | 8.0 | 0.0205 |  |
| [CVE-2021-33746](https://patchblox.com/security/data/cve/CVE-2021-33746.md) | High | Microsoft Windows DNS | 8.0 | 0.0200 |  |
| [CVE-2021-33754](https://patchblox.com/security/data/cve/CVE-2021-33754.md) | High | Microsoft Windows DNS | 8.0 | 0.0198 |  |
| [CVE-2021-34516](https://patchblox.com/security/data/cve/CVE-2021-34516.md) | High | Windows Win32K | 7.8 | 0.0130 |  |
| [CVE-2021-34498](https://patchblox.com/security/data/cve/CVE-2021-34498.md) | High | Microsoft Graphics Component | 7.8 | 0.0106 |  |
| [CVE-2021-34514](https://patchblox.com/security/data/cve/CVE-2021-34514.md) | High | Windows Kernel | 7.8 | 0.0070 |  |
| [CVE-2021-33773](https://patchblox.com/security/data/cve/CVE-2021-33773.md) | High | Windows Remote Access Connection Manager | 7.8 | 0.0064 |  |
| [CVE-2021-33761](https://patchblox.com/security/data/cve/CVE-2021-33761.md) | High | Windows Remote Access Connection Manager | 7.8 | 0.0061 |  |
| [CVE-2021-34511](https://patchblox.com/security/data/cve/CVE-2021-34511.md) | High | Windows Installer | 7.8 | 0.0057 |  |
| [CVE-2021-34460](https://patchblox.com/security/data/cve/CVE-2021-34460.md) | High | Windows Storage Spaces Controller | 7.8 | 0.0056 |  |
| [CVE-2021-34456](https://patchblox.com/security/data/cve/CVE-2021-34456.md) | High | Windows Remote Access Connection Manager | 7.8 | 0.0056 |  |
| [CVE-2021-34455](https://patchblox.com/security/data/cve/CVE-2021-34455.md) | High | Windows File History Service | 7.8 | 0.0053 |  |
| [CVE-2021-34459](https://patchblox.com/security/data/cve/CVE-2021-34459.md) | High | Windows AppContainer | 7.8 | 0.0053 |  |
| [CVE-2021-34444](https://patchblox.com/security/data/cve/CVE-2021-34444.md) | Routine | Role: DNS Server | 6.5 | 0.0346 |  |
| [CVE-2021-34507](https://patchblox.com/security/data/cve/CVE-2021-34507.md) | Routine | Windows Remote Assistance | 6.5 | 0.0326 |  |
| [CVE-2021-33764](https://patchblox.com/security/data/cve/CVE-2021-33764.md) | Routine | Windows Key Distribution Center | 5.9 | 0.0305 |  |
| [CVE-2021-33757](https://patchblox.com/security/data/cve/CVE-2021-33757.md) | Routine | Windows Security Account Manager | 5.3 | 0.0295 |  |
| [CVE-2021-33745](https://patchblox.com/security/data/cve/CVE-2021-33745.md) | Routine | Role: DNS Server | 6.5 | 0.0287 |  |
| [CVE-2021-34499](https://patchblox.com/security/data/cve/CVE-2021-34499.md) | Routine | Microsoft Windows DNS | 6.5 | 0.0287 |  |
| [CVE-2021-33783](https://patchblox.com/security/data/cve/CVE-2021-33783.md) | Routine | Windows SMB | 6.5 | 0.0277 |  |
| [CVE-2021-33782](https://patchblox.com/security/data/cve/CVE-2021-33782.md) | Routine | Windows Authenticode | 5.5 | 0.0225 |  |
| [CVE-2021-34447](https://patchblox.com/security/data/cve/CVE-2021-34447.md) | Routine | Windows MSHTML Platform | 6.8 | 0.0205 |  |
| [CVE-2021-34496](https://patchblox.com/security/data/cve/CVE-2021-34496.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0204 |  |
| [CVE-2021-34491](https://patchblox.com/security/data/cve/CVE-2021-34491.md) | Routine | Windows Win32K | 5.5 | 0.0097 |  |
| [CVE-2021-33763](https://patchblox.com/security/data/cve/CVE-2021-33763.md) | Routine | Windows Remote Access Connection Manager | 5.5 | 0.0088 |  |
| [CVE-2021-34440](https://patchblox.com/security/data/cve/CVE-2021-34440.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0088 |  |
| [CVE-2021-34454](https://patchblox.com/security/data/cve/CVE-2021-34454.md) | Routine | Windows Shell | 5.5 | 0.0087 |  |
| [CVE-2021-34457](https://patchblox.com/security/data/cve/CVE-2021-34457.md) | Routine | Windows Remote Access Connection Manager | 5.5 | 0.0087 |  |
| [CVE-2021-33765](https://patchblox.com/security/data/cve/CVE-2021-33765.md) | Routine | Windows Installer | 6.2 | 0.0073 |  |

---

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