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.
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
Source:
www.securityweek.com