CVE-2021-34470 Microsoft Exchange Server Elevation of Privilege Vulnerability
An attacker can elevate privileges on Microsoft Exchange Server, potentially gaining unauthorized control over the mail system.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-34470?
CVE-2021-34470 is a high-severity vulnerability in Microsoft Exchange Server, published on 14 Jul 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Microsoft Exchange Server Elevation of Privilege Vulnerability
Which versions are affected by CVE-2021-34470?
It affects 1 product.
Products include Microsoft Exchange Server.
How do I fix CVE-2021-34470?
No fix has been published for CVE-2021-34470 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-34470 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-34470 exists.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Microsoft Exchange Server
- CVE-2024-21410 Microsoft Exchange Server Privilege Escalation
- CVE-2021-34473 Microsoft Exchange Server Remote Code Execution
- CVE-2021-26855 Microsoft Exchange Server Remote Code Execution
- CVE-2021-34523 Microsoft Exchange Server Privilege Escalation
- CVE-2023-21529 Microsoft Exchange Server Deserialization of Untrusted Data
Sources
Also known as GHSA-hxhm-28wc-v3qm.