Buffer overflow in VMware Cloud Foundation
CVE-2025-41236
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.027 (85.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.027 · change: +0.001
Affected products
- VMware Cloud Foundation — versions 5.x, 4.5.x
- VMware Esxi — versions 8.0, 7.0
- VMware Fusion — versions 13.x
- VMware Telco Cloud Infrastructure — versions 3.x, 2.x
- VMware Telco Cloud Platform — versions 5.x, 4.x, 3.x, 2.x
- VMware Workstation — versions 17.x
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-41236?
- CVE-2025-41236 is a critical-severity vulnerability in VMware Cloud Foundation, classified under Out-of-bounds Write. CVSS score: 9.3/10. Published 2025-07-15.
- How severe is CVE-2025-41236?
- Critical severity. CVSS v3 base score is 9.3 out of 10.
- Is CVE-2025-41236 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.