⚡ Exploit-DB.ai HIGH
HIGH

CVE-2021-30116

Published: March 18, 2026 · Source: National Vulnerability Database (NVD)

⚡ AI Threat Assessment

Kaseya VSA zero-day exploited by REvil ransomware group in the largest ever MSP supply-chain attack affecting 1,500+ businesses simultaneously on July 4, 2021. If running VSA, apply patches immediately and audit all deployed scripts.

📋 Official Description

Kaseya VSA before 9.5.7 allows credential disclosure via a predictable session ID and timing attack.

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