Loading vulnerability…
CVE-2026-59346 is a critical integer-overflow vulnerability in the VMXNET3 virtual network adapter implementation in VMware Workstation and VMware Fusion. A local administrator within an affected guest virtual machine can trigger the flaw through a VMXNET3 adapter and execute code on the underlying host, constituting a guest-to-host VM escape. Affected releases are VMware Workstation and VMware Fusion 25H2 and 26H1.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical integer-overflow vulnerability enabling guest-to-host arbitrary code execution from a virtual machine with local administrator privileges when the VM uses the VMXNET3 virtual network adapter.
Critical integer-overflow vulnerability in VMware's VMXNET3 virtual network adapter that permits VM escape and host code execution by an attacker with administrative privileges in an affected guest VM.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.