Unitrends Backup
CVE-2021-43033
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Multiple functions in the bpserverd daemon were vulnerable to arbitrary remote code execution as root. The vulnerability was caused by untrusted input (received by the server) being passed to system calls.
AnalysisAI
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Multiple functions in the bpserverd daemon were vulnerable to arbitrary remote code execution as root. The vulnerability was caused by untrusted input (received by the server) being passed to system calls. Affected products include: Kaseya Unitrends Backup. Version information: before 10.5.5..
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.
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An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Rated critical severity (CVSS 9.8), this vul
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Rated critical severity (CVSS 9.8), this vul
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Rated critical severity (CVSS 9.8), this vul
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Rated critical severity (CVSS 9.8), this vul
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Rated high severity (CVSS 8.8), this vulnera
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Rated high severity (CVSS 8.8), this vulnera
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Rated high severity (CVSS 8.8), this vulnera
An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. Rated high severity (CVSS 7.8), this vulnera
Same weakness CWE-78 – OS Command Injection
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External POC / Exploit Code
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