Actively exploited · Published Feb 13, 2024 · Assigned by microsoft
CVE-2024-21410Microsoft Exchange Server Elevation of Privilege Vulnerability
Critical 9.8 Exploited
In plain English
A critical-severity improper authentication in Microsoft Exchange Server 2016 Cumulative Update 23 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on February 15, 2024). The chance it is exploited in the next 30 days is estimated at 12.7% (higher than 96% of all known vulnerabilities). Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA guidance
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by Mar 7, 2024.
Official description
Microsoft Exchange Server Elevation of Privilege Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0 – before 15.01.2507.037 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 13 | 15.02.0 – before 15.2.1544.004 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0 – before 15.2.1544.004 |
Weakness: CWE-287 · Vector: 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
References
- Microsoft Exchange Server Elevation of Privilege Vulnerability vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21410 government-resource