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Case File

CVE-2021-43042

CRITICAL · CVSS 9.8 EPSS 2.90% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-12-06 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable. Exploitation may require the attacker to be authenticated.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-43042
Severity
CRITICAL
CVSS
9.8
EPSS
2.90%

Original NVD Description

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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)