# KB5002254: March 2023 security update

KB5002254, released March 14, 2023, fixes 1 CVE across 2 products. One of them is being exploited (CVE-2023-23397); 1 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/microsoft/kb5002254
- Platform: Microsoft
- Released: Mar 14, 2023
- Priority: Patch now (Closes CVE-2023-23397, exploited (CISA KEV))
- CVEs: 1, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://support.microsoft.com/help/5002254

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft Outlook 2016 (32-bit edition)](https://patchblox.com/security/data/product/microsoft/microsoft-outlook-2016-32-bit-edition.md) |  |  |
| [Microsoft Outlook 2016 (64-bit edition)](https://patchblox.com/security/data/product/microsoft/microsoft-outlook-2016-64-bit-edition.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2023-23397](https://patchblox.com/security/data/cve/CVE-2023-23397.md) | Patch now | Microsoft Office Outlook | 9.8 | 0.9716 | CISA KEV |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo