CVE-2025-41236

VMXNET3 integer-overflow vulnerability

Critical9.3EPSS 2.6%

Published: 15 Jul 2025
Updated: 26 Feb 2026
Reserved: 16 Apr 2025
Assigned by: vmware

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.

Scores

CVSS scores of CVE-2025-41236, by who scored it
Scored by	CVSS	Score	Vector
vmwareCNA (assigner)	3.1	Critical9.3	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVDNVD · Deferred	3.1	Critical9.3	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS (exploitation in 30 days): 2.6% · top 14% of all CVEs (6 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.3.

Weakness

CWE-787 Out-of-bounds Write (opens in a new tab)All about CWE-787 and its CVEs

Affected products

VMware · ESXi
- affected 8.0 – < ESXi80U3f-24784735
- affected 8.0 – < ESXi80U2e-24789317
- affected 7.0 – < ESXi70U3w-24784741
VMware · Cloud Foundation
- affected 5.x, 4.5.x
VMware · Workstation
- affected 17.x – < 17.6.4
VMware · Fusion
- affected 13.x – ≤ 13.6.4
VMware · Telco Cloud Platform
- affected 5.x, 4.x, 3.x, 2.x
VMware · Telco Cloud Infrastructure
- affected 3.x, 2.x

References (1)

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/35877 (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated 26 Feb 2026, 17:50 UTC.