CVE-2024-21410
Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Privilege Escalation Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21410; https://nvd.nist.gov/vuln/detail/CVE-2024-21410
Description
Microsoft Exchange Server Elevation of Privilege Vulnerability
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:CExploitation Context
as of October 17, 2026- CISA added CVE-2024-21410 to the KEV catalog 2 days after its CVE record was published. The median for entries added in 2024 is 21.5 days.
- It is one of 391 Microsoft entries in the CISA KEV catalog, and one of 36 added in 2024.
- Its current EPSS score (12.6%) is higher than that of 29% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Microsoft Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0 to <15.01.2507.037 |
| Microsoft | Microsoft Microsoft Exchange Server 2019 Cumulative Update 13 | 15.02.0 to <15.2.1544.004 |
| Microsoft | Microsoft Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0 to <15.2.1544.004 |
References
1 LinksRecord Details
More from Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Elevation of Privilege Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
Related
Tool categories
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.