Vulnerabilities Critical VM Escape Vulnerability Patched in VMware ESXi A total of five vulnerabilities have been patched in VMware ESXi, vCenter, Workstation, and Fusion. By Eduard Kovacs | July 29, 2026 (7:42 AM ET) Flipboard Reddit Whatsapp Whatsapp Email Broadcom published a new security advisory on Wednesday, informing VMware product users that patches are available for several vulnerabilities affecting ESXi, vCenter, Workstation, and Fusion. Three of the vulnerabilities have been assigned a ‘critical’ severity rating. One of them is CVE-2026-47876, an out-of-bounds write issue in ESXi’s VMXNET3 virtual network adapter. An attacker with local admin privileges on a VM with this adapter can exploit it to execute arbitrary code on the host. CVE-2026-47876 has been described by VMware as a VM escape. The second critical flaw, CVE-2026-59309, is a vCenter authentication bypass that can be exploited to gain unauthorized access to the targeted system. CVE-2026-59310 is also a critical vCenter vulnerability, allowing an attacker with network access to execute arbitrary code. VMware ESXi, Workstation, and Fusion are affected by CVE-2026-41703, a high-severity vulnerability that allows an attacker with VM deployment permissions to obtain information or, more likely, cause a DoS condition on the host process. Advertisement. Scroll to continue reading. The last flaw, CVE-2026-41709, is a low-severity issue in ESXi that allows an attacker with admin privileges to conduct certain activities without being logged. Broadcom is not aware of the in-the-wild exploitation of these vulnerabilities, but it’s important that organizations install the latest updates, as threat actors often exploit flaws in VMware products. In addition to its advisory , the vendor has published an FAQ detailing the impact of the vulnerabilities and patching requirements. Related : 7 Severe Vulnerabilities Patched in VMware Avi Load Balancer Related : High-Severity Vulnerability Patched in VMware Fusion Related : VMware Aria Operations Vulnerability Exploited in the Wild Written By Eduard Kovacs Eduard Kovacs (@EduardKovacs) is senior managing editor at SecurityWeek. He worked as a high school IT teacher before starting a career in journalism in 2011. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering. Daily Briefing Newsletter Subscribe to the SecurityWeek Email Briefing for the latest cybersecurity threats, trends, and expert insights. 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