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CVE record · CVE-2024-21410

Microsoft Exchange Server Elevation of Privilege Vulnerability

CVSS 9.8 CriticalCriticalIn CISA KEVEPSS 0.13 · 96th percentile

Critical, because:

  • In CISA’s KEV catalogue since 15 Feb 2024: it is known to be exploited.
  • CVSS score 9.8: 9.0 or more.
  • CVSS score 9.8 (7.0 or more) and EPSS 0.13 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the CVE Program (CNA: microsoft) at 13 Feb 2024, 18:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Microsoft Microsoft Exchange Server 2016 Cumulative Update 23
  • affected 15.01.0 to before 15.01.2507.037 custom
Microsoft Microsoft Exchange Server 2019 Cumulative Update 13
  • affected 15.02.0 to before 15.2.1544.004 custom
Microsoft Microsoft Exchange Server 2019 Cumulative Update 14
  • affected 15.02.0 to before 15.2.1544.004 custom
Identifiers
CVE-2024-21410
CNA
microsoft
Weakness (CWE)
CWE-287
Tags
Published
13 Feb 2024
Updated
10 Aug 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 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 CNA (microsoft)
  • CISA KEV Listed since 15 Feb 2024: known to be exploited.
  • EPSS 0.13, the 96th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 13 Feb 2024. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.