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CVE-2024-21410

Microsoft Exchange Server Privilege Escalation

9.8 CRITICALActively exploited (CISA KEV)EPSS 12.6%
  1. Published13 Feb 2024
  2. Added to CISA KEV15 Feb 2024
  3. Remediation due7 Mar 2024
Actively exploited (CISA KEV)

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

Added to KEV: 15 Feb 2024Federal remediation due: 7 Mar 2024

Description

Microsoft Exchange Server Elevation of Privilege Vulnerability

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Exchange Server2016 · 2019

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2024-21410 being actively exploited?

Yes. CVE-2024-21410 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 15 Feb 2024.

How severe is CVE-2024-21410?

CVE-2024-21410 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 12.6% probability of exploitation.

Which products are affected by CVE-2024-21410?

Affected products include Microsoft Exchange Server.

How do I fix CVE-2024-21410?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-21410 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.