VMware fixes four ESXi zero-day bugs exploited at Pwn2Own Berlin
VMware fixed four vulnerabilities in VMware ESXi, Workstation, Fusion, and Tools that were exploited as zero-days during the Pwn2Own Berlin 2025 hacking contest in May 2025. [...]
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Background for this topic.
Hacking is the use of technical methods to access, alter, disrupt, or examine computer systems and data, either with authorization or without it. In security reporting, the term usually covers unauthorized exploitation of software flaws, exposed services, weak credentials, misconfigurations, and sometimes human trust through phishing or other social engineering.
Its security significance depends on the attacker’s access and objective: a compromised internet-facing system may enable data theft, unauthorized changes, or movement into other systems, while a benign penetration test can reveal the same weaknesses before they are abused. Defenders reduce exposure through timely vulnerability management, secure configuration, strong authentication, network and endpoint monitoring, and tested incident-response procedures. Useful reporting distinguishes confirmed compromise from attempted or suspected activity and identifies the exploited entry point, affected assets, and whether access was contained.
VMware fixed four vulnerabilities in VMware ESXi, Workstation, Fusion, and Tools that were exploited as zero-days during the Pwn2Own Berlin 2025 hacking contest in May 2025. [...]
The Chinese state-sponsored hacking group known as Salt Typhoon breached and remained undetected in a U.S. Army National Guard network for nine months in 2024, stealing network configuration files and administrator credentials that could be used to compromise other government networks. [...]
A 21-year old former U.S. Army soldier pleaded guilty to charges of hacking and extorting at least ten telecommunications and technology companies in the country. [...]