Bleepingcomputer Chinese-Speaking Threat Actors Exploit VMware ESXi via Compromised SonicWall VPN
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In December 2025, Chinese-speaking threat actors exploited vulnerabilities in VMware ESXi using a toolkit delivered through a compromised SonicWall VPN appliance. The toolkit included exploits for three zero-day vulnerabilities disclosed in March 2025, with evidence suggesting initial access was gained through the VPN. The toolkit's development paths contained simplified Chinese strings, indicating the actors' linguistic background.
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