Remote code execution in Kaseya VSA
| Risk | Critical |
| Patch available | NO |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-30116 |
| CWE-ID | CWE-20 |
| 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 Bulletin
This security bulletin contains one critical risk vulnerability.
1) Input validation error
EUVDB-ID: #VU54523
Risk: Critical
CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]
CVE-ID: CVE-2021-30116
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe 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 versionsKaseya VSA: All versions
CPE2.3 External linkshttp://csirt.divd.nl/2021/07/04/Kaseya-Case-Update-2/
http://helpdesk.kaseya.com/hc/en-gb/articles/4403440684689
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.
