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CVE-2024-21410

Microsoft Exchange Server Privilege Escalation Vulnerability

Microsoft Exchange ServerApplications & CMS
Open in ThreatlineRecord JSON
CVSS
9.8Critical
ExploitationExploited in the wildAdded to KEV 15 Feb 2024CISA KEV
Exploit odds (EPSS)12.6%Chance of exploitation activity in the next 30 days, higher than 96% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in15.01.2507.037Also 15.2.1544.004CVE List
Federal deadline7 Mar 2024Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

  • 15.01.2507.037Microsoft Exchange Server 2016 Cumulative Update 23CVE List
  • 15.2.1544.004Microsoft Exchange Server 2019 Cumulative Update 13CVE List
  • 15.2.1544.004Microsoft Exchange Server 2019 Cumulative Update 14CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 13 Feb 2024, 18:02 UTCPublishedCVE List
  2. 15 Feb 2024Added to CISA KEVCISA KEV

Description

Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation.

Text from CVE List

Affected versions 3

  • Microsoft Exchange Server 2016 Cumulative Update 23affected: 15.01.0 before 15.01.2507.037CVE List
  • Microsoft Exchange Server 2019 Cumulative Update 13affected: 15.02.0 before 15.2.1544.004CVE List
  • Microsoft Exchange Server 2019 Cumulative Update 14affected: 15.02.0 before 15.2.1544.004CVE List

References 3