# CVE-2023-23398: Microsoft Excel Spoofing Vulnerability

CVE-2023-23398 is fixed in 5 products on 1 platform, first by KB5002348, released March 14, 2023. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2023-23398
- Priority: Urgent
- CVSS: 7.1 (Important)
- EPSS: 0.0062
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation More Likely
- Published: Mar 14, 2023
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23398

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft Excel 2013 RT Service Pack 1 |  | [KB5002348](https://patchblox.com/security/data/fix/microsoft/kb5002348.md) | Mar 14, 2023 |
| Microsoft | Microsoft Excel 2013 Service Pack 1 (32-bit editions) |  | [KB5002348](https://patchblox.com/security/data/fix/microsoft/kb5002348.md) | Mar 14, 2023 |
| Microsoft | Microsoft Excel 2013 Service Pack 1 (64-bit editions) |  | [KB5002348](https://patchblox.com/security/data/fix/microsoft/kb5002348.md) | Mar 14, 2023 |
| Microsoft | Microsoft Excel 2016 (32-bit edition) |  | [KB5002351](https://patchblox.com/security/data/fix/microsoft/kb5002351.md) | Mar 14, 2023 |
| Microsoft | Microsoft Excel 2016 (64-bit edition) |  | [KB5002351](https://patchblox.com/security/data/fix/microsoft/kb5002351.md) | Mar 14, 2023 |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo