# CVE-2024-49040: Microsoft Exchange Server Spoofing Vulnerability

CVE-2024-49040 is fixed in 3 products on 1 platform, first by KB5049233, released November 12, 2024. 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-2024-49040
- Priority: Urgent
- CVSS: 7.5 (Important)
- EPSS: 0.0847
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: yes
- Vendor exploitability assessment: Exploitation More Likely
- Published: Nov 12, 2024
- Weakness: User Interface (UI) Misrepresentation of Critical Information
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-49040

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 |  | [KB5049233](https://patchblox.com/security/data/fix/microsoft/kb5049233.md) | Nov 12, 2024 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 13 |  | [KB5049233](https://patchblox.com/security/data/fix/microsoft/kb5049233.md) | Nov 12, 2024 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 |  | [KB5049233](https://patchblox.com/security/data/fix/microsoft/kb5049233.md) | Nov 12, 2024 |

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Data as of 2026-11-08T06:59:42Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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