CVE-2024-21410: Microsoft Exchange Server Privilege Escalation Vulnerability
Vulnerability summary
CVE-2024-21410 is a critical (CVSS 9.8) Improper Authentication vulnerability in Microsoft Exchange Server. It is known to be exploited: CISA lists it, first on 15-02-2024. EPSS estimates a 12.56% chance of exploitation in the next 30 days, higher than 96.2% of scored vulnerabilities.
Timeline
- 13-02-2024PublishedVulnerability first disclosed.
- 15-02-2024Added to CISA KEVMicrosoft Exchange Server Privilege Escalation Vulnerability
- 07-03-2024CISA remediation dueApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- 10-08-2026Last modifiedVulnerability information updated.
Description
Microsoft Exchange Server Elevation of Privilege Vulnerability
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
12.56%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
0.00 pp
From 12.56% on 21-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 15-02-2024
- Federal due date
- 07-03-2024
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21410 nvd.nist.gov/vuln/detail/CVE-2024-21410
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft4 products
- exchange_server2016:cumulative_update_23 | 2019:cumulative_update_13 | 2019:cumulative_update_14
- microsoft exchange server 2016 cumulative update 23≥ 15.01.0, < 15.01.2507.037
- microsoft exchange server 2019 cumulative update 13≥ 15.02.0, < 15.2.1544.004
- microsoft exchange server 2019 cumulative update 14≥ 15.02.0, < 15.2.1544.004
1 vendor · 4 products
References
2 links
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21410Government ResourceUS Government Resource