CVE-2024-21410
Microsoft Exchange Server Privilege Escalation Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 7 March 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Microsoft Exchange Server Elevation of Privilege Vulnerability
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 12.66% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 15 February 2024 · due 7 March 2024
- Weakness
- CWE-287
- Affected
- microsoft/exchange server
- Source
- secure@microsoft.com
EPSS 12.7% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21410; https://nvd.nist.gov/vuln/detail/CVE-2024-21410
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21410Patch, Vendor Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21410Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21410US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.