# KB5019076: August 2022 security update

KB5019076, released August 9, 2022, fixes 5 CVEs in Microsoft Exchange Server 2013 Cumulative Update 23. 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/kb5019076
- Platform: Microsoft
- Released: Aug 9, 2022
- Priority: Urgent (Closes CVE-2022-21980, exploitation more likely)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5019076

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft Exchange Server 2013 Cumulative Update 23](https://patchblox.com/security/data/product/microsoft/microsoft-exchange-server-2013-cumulative-update-23.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2022-21980](https://patchblox.com/security/data/cve/CVE-2022-21980.md) | Urgent | Microsoft Exchange Server | 8.0 | 0.0274 | More likely |
| [CVE-2022-24516](https://patchblox.com/security/data/cve/CVE-2022-24516.md) | Urgent | Microsoft Exchange Server | 8.0 | 0.0245 | More likely |
| [CVE-2022-24477](https://patchblox.com/security/data/cve/CVE-2022-24477.md) | Urgent | Microsoft Exchange Server | 8.0 | 0.0231 | More likely |
| [CVE-2022-21979](https://patchblox.com/security/data/cve/CVE-2022-21979.md) | Routine | Microsoft Exchange Server | 4.8 | 0.0222 |  |
| [CVE-2022-30134](https://patchblox.com/security/data/cve/CVE-2022-30134.md) | Routine | Microsoft Exchange Server | 6.5 | 0.0214 | Disclosed |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo