Remote code execution in Kaseya VSA

Published: 2021-07-05
Risk Critical
Patch available NO
Number of vulnerabilities 1
CVE ID CVE-2021-30116
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
Kaseya VSA
Server applications / Remote management servers, RDP, SSH

Vendor Kaseya

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Input validation error

Risk: Critical

CVSSv3.1: 9.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:U/RC:C] [PCI]

CVE-ID: CVE-2021-30116

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No


The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to unspecified error. A remote attacker can compromise the affected system.

Note, the vulnerability is being actively exploited in the wild by the REvil ransomware.


Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Kaseya VSA: All versions

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.