Unitrends Backup
CVE-2021-43042
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. A buffer overflow existed in the vaultServer component. This was exploitable by a remote unauthenticated attacker.
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 Buffer Copy without Size Check (CWE-120), which allows attackers to overflow a buffer to corrupt adjacent memory. An issue was discovered in Kaseya Unitrends Backup Appliance before 10.5.5. A buffer overflow existed in the vaultServer component. This was exploitable by a remote unauthenticated attacker. 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. Always validate buffer sizes before copy operations. Use bounded functions (strncpy, snprintf). Enable compiler protections.
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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-120 – Classic Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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