Attackers Exploit AhsayCBS Flaws to Deploy Sandbox-Evading Python Backdoor
Introduction In cybersecurity operations, backup management servers represent high-value targets because they hold centralized control over system recovery infrastructure and host sensitive organizational data. In late 2026, security researchers observed threat actors exploiting critical zero-day vulnerabilities in AhsayCBS—a widely deployed cloud backup server solution—to execute unauthenticated remote code execution (RCE). By chaining an authentication bypass vulnerability with a path traversal