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Exploits
ID:5259 - Exploit for Input validation error in Microsoft Exchange Server - CVE-2021-26857
ID:5259 - Exploit for Input validation error in Microsoft Exchange Server - CVE-2021-26857
Published: April 1, 2021
Vulnerability identifier: #VU51170
Vulnerability risk: Critical
CVE-ID: CVE-2021-26857
CWE-ID: CWE-20
Exploitation vector: Remote access
Vulnerable software:
Microsoft Exchange Server
Microsoft Exchange Server
Link to public exploit:
Vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted data to the Exchange server and execute arbitrary code on the system.
Note, this vulnerability is being actively exploited in the wild.
Remediation
Install updates from vendor's website.