CVE-2021-31195 Microsoft Exchange Server Remote Code Execution Vulnerability
Attackers can achieve remote code execution on Microsoft Exchange Server, requiring immediate patching by administrators.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-31195?
CVE-2021-31195 is a medium-severity vulnerability in Microsoft Exchange Server, published on 11 May 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Microsoft Exchange Server Remote Code Execution Vulnerability
Weakness: CWE-290
Which versions are affected by CVE-2021-31195?
It affects 1 product.
Products include Microsoft Exchange Server.
How do I fix CVE-2021-31195?
No fix has been published for CVE-2021-31195 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-31195 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-31195 exists.
Public exploit code: 1 Nuclei template.
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-w3mg-g64h-4h34.