Vulnerability · CVE-2024-21410
Microsoft Exchange Server Privilege Escalation Vulnerability
Published Feb 13, 2024 · catalog updated Jun 17, 2026 · Microsoft Exchange Server
- Severity
- Critical9.8
- Known exploitation
- CISA KEV and VulnCheck KEV
- EPSS
- 12.6%
- Remediation
- Remediation guidance
- Affected products
- cpe microsoft/exchange server · vendor Microsoft Exchange Server
Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation.
Technical analysis
Mechanism and impact are interpreted from ingested advisories — not independent exploit research.
CWE classification
Prerequisites and impact
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
How to fix CVE-2024-21410
Recommended remediation
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. CISA due date Mar 7, 2024.
Official advisories
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2024-21410 is a critical public vulnerability record for Microsoft Exchange Server. CISA lists it as known exploited. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether Microsoft Exchange Server is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: microsoft/exchange server (2016); microsoft/exchange server (2019); Microsoft Exchange Server. Published remediation guidance: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 9.8 (technical impact); EPSS 12.6% (30-day exploitation probability). CISA lists it as known exploited. Weakness classes: CWE-287. Sources contributing to this record: cisa_kev, cve_org, epss, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Related intelligence
Exploitation evidence
Confirmed in CISA KEV since Feb 14, 2024. Listed in CISA KEV and VulnCheck KEV.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Feb 13, 2024 · Catalog
Detected
Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation.
Feb 15, 2024 · CISA KEV
Known exploited
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Mar 7, 2024 · CISA KEV
Remediation due
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Jun 17, 2026 · Catalog
Updated
Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation.
Affected versions
Enter an installed version to get a verified affected / not-affected result against the ranges below.
- cpe microsoft/exchange server2016
- cpe microsoft/exchange server2019
- vendor Microsoft Exchange Serverversion unspecified
Sources
- CISA KEVConfirmed exploitationCVE-2024-21410
Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation.
cisa.gov - CVE.orgVulnerability recordCVE-2024-21410
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2024-21410
30-day exploitation probability 12.6%
first.org - NIST NVDVulnerability recordCVE-2024-21410
Microsoft Exchange Server Elevation of Privilege Vulnerability
nvd.nist.gov - VulnCheck KEVConfirmed exploitationCVE-2024-21410
Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation.
vulncheck.com
References
Freshness
Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.