CVE-2025-41236 VMXNET3 integer-overflow vulnerability
A local administrator in a VM can exploit an integer overflow in the VMXNET3 adapter to execute code on the host, requiring immediate patching.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-41236?
CVE-2025-41236 is a critical vulnerability in VMware Cloud Foundation, published on 15 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
VMware ESXi, Workstation, and Fusion contain an integer-overflow vulnerability in the VMXNET3 virtual network adapter. A malicious actor with local administrative privileges on a virtual machine with VMXNET3 virtual network adapter may exploit this issue to execute code on the host. Non VMXNET3 virtual adapters are not affected by this issue.
Weakness: CWE-787
Which versions are affected by CVE-2025-41236?
How do I fix CVE-2025-41236?
No fix has been published for CVE-2025-41236 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-41236 being exploited?
There is no known exploitation of CVE-2025-41236 in the wild and no public exploit code.
Sources
Also known as GHSA-vvjv-89cj-78fr.