The actively exploited defect, triggered by an attacker’s use of a publicly available sample machine key, underscores the vendor and customers’ poor configuration practices.

The vendor, which has been widely targeted, said the memory-overflow vulnerability can result in remote-code execution or denial of service.

Attackers have already used the exploit dubbed “ToolShell” to intrude hundreds of organizations globally, including private companies and government agencies.

The besieged security vendor maintains the latest exploited vulnerabilities in its products are entirely linked to unspecified security issues in open-source libraries. Some researchers aren’t buying it.

Research released Tuesday by watchTowr shows how easy an old storage bucket can be repurposed by malicious attackers.

Researchers at watchTowr Labs found that abandoned and expired internet infrastructure left by hacking groups can function as backdoors within other backdoors.