# KB4541722: August 2020 security update

KB4541722, released August 11, 2020, fixes 1 CVE in Microsoft Dynamics 365 (on-premises) version 9.0. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb4541722
- Platform: Microsoft
- Released: Aug 11, 2020
- Priority: High (Closes CVE-2020-1591, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4541722

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft Dynamics 365 (on-premises) version 9.0](https://patchblox.com/security/data/product/microsoft/microsoft-dynamics-365-on-premises-version-9.0.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-1591](https://patchblox.com/security/data/cve/CVE-2020-1591.md) | High | Microsoft Dynamics | n/a | 0.0151 |  |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo