CVE-2026-47876
VMXNET3 out-of-bounds write vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in ESXi-9.1.0.0200-25557999, ESXi-9.0.2.0100-25595025, ESXi80U3k-25595708
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- VMware Cloud Foundation
9.1.x.x, 9.0.x.x, 5.x
- VMware vSphere Foundation
9.1.x.x, 9.0.x.x
- VMware ESX
From 9.1.x.x · fixed in ESXi-9.1.0.0200-25557999; From 9.0.x.x · fixed in ESXi-9.0.2.0100-25595025; From 8.0 · fixed in ESXi80U3k-25595708
- VMware Telco Cloud Platform
5.1.x, 5.0.x