CVE-2024-21410: Microsoft Exchange Server Privilege Escalation Vulnerability
First published: Tue Feb 13 2024(Updated: )
Microsoft Exchange Server contains an unspecified vulnerability that allows for privilege escalation.
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Exchange Server | ||
| Microsoft Exchange Server | =2016-cumulative_update_23 | |
| Microsoft Exchange Server | =2019-cumulative_update_13 | |
| Microsoft Exchange Server | =2019-cumulative_update_14 | |
| Microsoft Exchange Server | =23 | |
| Microsoft Exchange Server | =14 | |
| Microsoft Exchange Server | =13 | |
| Microsoft Exchange Server | =23 |
Remedy
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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Reference Links
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21410 (Advisory)
- https://www.bleepingcomputer.com/news/security/microsoft-exchange-update-enables-extended-protection-by-default/
- https://www.bleepingcomputer.com/news/security/microsoft-new-critical-exchange-bug-exploited-as-zero-day/
- https://www.bleepingcomputer.com/news/security/over-28-500-exchange-servers-vulnerable-to-actively-exploited-bug/
- https://www.bleepingcomputer.com/news/security/germany-warns-of-17k-vulnerable-microsoft-exchange-servers-exposed-online/
- https://www.zdnet.com/article/everything-you-need-to-know-about-microsoft-exchange-server-hack/
- https://www.theregister.com/2024/03/28/germany_microsoft_exchange_patch/
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21410;
- https://nvd.nist.gov/vuln/detail/CVE-2024-21410
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2024-21410?
CVE-2024-21410 has been classified as a critical elevation of privilege vulnerability in Microsoft Exchange Server.
How do I fix CVE-2024-21410?
To fix CVE-2024-21410, install the latest security updates from Microsoft for the affected versions of Exchange Server.
Which versions of Microsoft Exchange Server are affected by CVE-2024-21410?
CVE-2024-21410 affects Microsoft Exchange Server 2016 and 2019, specifically cumulative updates 13 and 14 for 2019 and cumulative update 23 for 2016.
What type of vulnerability is CVE-2024-21410?
CVE-2024-21410 is an elevation of privilege vulnerability which allows attackers to gain elevated access to system resources.
Is there a known exploit for CVE-2024-21410?
Yes, CVE-2024-21410 is reported to be exploited in the wild as a zero-day vulnerability.
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