CVE-2026-47876 json
VMXNET3 out-of-bounds write vulnerability
published 2026-07-30 3 mo ago modified 2026-07-30 3 mo ago also EUVD-2026-51105
- cvss
- 9.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
VMware ESX contains an out-of-bounds write 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.
Patch / fix
- VMware ESX ESXi-9.0.2.0100-25595025, ESXi-9.1.0.0200-25557999, ESXi80U3k-25595708
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
- VMware Cloud Foundation
- VMware vSphere Foundation
- VMware ESX
- VMware Telco Cloud Platform
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
Sources
- CVE List CVE-2026-47876
- NVD CVE-2026-47876
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