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Broadcom has released critical patches for five vulnerabilities affecting VMware ESXi, highlighting the need for organizations to prioritize security measures. The most severe vulnerability, CVE-2026-47876, allows attackers to run code on the host from a compromised virtual machine.
Broadcom has released patches for five vulnerabilities affecting VMware ESXi, vCenter, Workstation, and Fusion. The most critical vulnerability is CVE-2026-47876, which allows attackers to run code on the host from a compromised virtual machine. CVE-2026-47876 is a VM escape flaw in the VMXNET3 virtual network adapter, with a maximum CVSSv3 base score of 9.3. Another critical issue fixed by Broadcom is CVE-2026-59309, an authentication bypass vulnerability in the VMware Directory Service. Organizations that use VMware ESXi must prioritize their security measures and patch these vulnerabilities to prevent potential attacks.
Broadcom, a leading technology company, has recently released patches to address five vulnerabilities affecting VMware ESXi, vCenter, Workstation, and Fusion. Among these vulnerabilities, the most critical one is CVE-2026-47876, which allows attackers to run code on the host from a compromised virtual machine.
The CVE-2026-47876 vulnerability is a VM escape flaw in the VMXNET3 virtual network adapter. This means that an attacker with administrator privileges inside a virtual machine can exploit this issue to execute arbitrary code on the underlying ESXi host. The severity of this issue has been evaluated by Broadcom as being in the Critical severity range, with a maximum CVSSv3 base score of 9.3.
This vulnerability highlights the importance of prioritizing security measures in organizations that use VMware ESXi. A single exploit could potentially lead to catastrophic consequences, including unauthorized access to sensitive data and systems. It is essential for organizations to take immediate action to patch this vulnerability and ensure that their virtual machines are secure.
Another critical issue fixed by Broadcom is CVE-2026-59309, which is an authentication bypass vulnerability in the VMware Directory Service. This vulnerability allows a malicious actor with network access to vCenter to bypass authentication and gain unauthorized access to the system. The severity of this issue has also been evaluated as being in the Critical severity range, with a maximum CVSSv3 base score of 9.8.
In addition to these two critical vulnerabilities, Broadcom has also fixed CVE-2026-59310, which is a flaw allowing an attacker with network access to execute arbitrary code. Furthermore, CVE-2026-41703 and CVE-2026-41709 have been patched, although the latter does not involve any active exploitation.
The recent patch from Broadcom serves as a wake-up call for organizations that use VMware ESXi to prioritize their security measures. It is essential to regularly update and patch software vulnerabilities to prevent such exploits from occurring in the future.
In conclusion, Broadcom's recent patches highlight the importance of prioritizing security measures in organizations that use VMware ESXi. Organizations must take immediate action to patch these vulnerabilities and ensure that their virtual machines are secure to prevent potential attacks.
Related Information:
https://www.ethicalhackingnews.com/articles/Broadcom-Patches-Critical-VMware-ESXi-Vulnerability-a-Wake-Up-Call-for-Organizations-to-Prioritize-Security-ehn.shtml
https://securityaffairs.com/196231/security/broadcom-patches-critical-vmware-esxi-vulnerability-enabling-host-code-execution.html
Published: Wed Jul 29 09:57:16 2026 by llama3.2 3B Q4_K_M
