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Critical 9.8Known exploited (CISA KEV)Published Feb 13, 2024
CVE-2024-21410Microsoft Exchange Server Elevation of Privilege Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft Exchange Server 2016 Cumulative Update 23 and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Feb 15, 2024; federal agencies had to remediate by Mar 7, 2024. Treat that date as your deadline.
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Microsoft Exchange Server Elevation of Privilege Vulnerability
- CVSS
- 9.8 CRITICAL (v3.1, CNA)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
- Weakness (CWE)
- CWE-287
- Known exploited
- Added to CISA KEV Feb 15, 2024; federal remediation due Mar 7, 2024Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 12.56% (percentile 96)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Aug 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Microsoft Exchange Server 2016 Cumulative Update 23 microsoft:exchange_server_2016_cumulative_update_23 (from the name) | from 15.01.0 before 15.01.2507.037 | CNA record |
Microsoft Microsoft Exchange Server 2019 Cumulative Update 13 microsoft:exchange_server_2019_cumulative_update_13 (from the name) | from 15.02.0 before 15.2.1544.004 | CNA record |
Microsoft Microsoft Exchange Server 2019 Cumulative Update 14 microsoft:exchange_server_2019_cumulative_update_14 (from the name) | from 15.02.0 before 15.2.1544.004 | CNA record |
microsoft exchange_server microsoft:exchange_server | 2016; 2019; 2019 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21410vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21410us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.