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CVE-2025-22226 is an out-of-bounds read vulnerability in the Host Guest File System (HGFS) component of VMware ESXi, VMware Workstation, and VMware Fusion. An attacker with administrative privileges in a guest virtual machine can trigger the flaw to disclose memory from the host-side VMX process. The vulnerability was addressed in Broadcom advisory VMSA-2025-0004 and was reported as exploited in the wild. The disclosed VMX memory may expose process-resident information useful for follow-on exploitation, including as part of a chained guest-to-hypervisor escape attack.
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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.
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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.
34 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An information disclosure vulnerability caused by an out-of-bounds read in VMware's HGFS.
A VMware vulnerability mentioned only in historical advisory context as one of the March 2025 zero-days.
A VMware ESXi vulnerability reportedly chained with CVE-2025-22225 in observed attacks.
An information disclosure vulnerability described as an HGFS memory leak, used as part of a multi-bug chain (e.g., to leak memory for ASLR bypass) impacting VMware virtualization products.
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.