CVE-2024-21410
Microsoft Exchange Server Elevation of Privilege Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 15 Feb 2024
Description
Microsoft Exchange Server Elevation of Privilege Vulnerability
Key facts
- Published
- 13 Feb 2024
- Last changed
- 10 Aug 2026
- Assigned by
- microsoft
- KEV added
- 15 Feb 2024
- KEV fix due
- 7 Mar 2024
- EPSS
- 12.661% likely to be exploited in the next 30 days, higher than 96.319% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom the CNA (microsoft)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 |
|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 13 |
|
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 |
|
Timeline
- 13 Feb 2024 Published
- 15 Feb 2024 CVE-2024-21410 added to CISA KEV
- 15 Feb 2024 Added to the CISA KEV catalogue