Out-of-bounds Read in VMware HGFS
CVE-2025-22226 is an information disclosure vulnerability affecting VMware ESXi, Workstation, and Fusion. The flaw is caused by an out-of-bounds read in HGFS (Host-Guest File System). According to the provided content, a malicious actor with administrative privileges inside a guest virtual machine can exploit the issue to leak memory from the VMX process. In reported exploit chains, this memory disclosure was used to recover VMX memory layout information, including the VMX base address, to aid subsequent exploitation steps.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
27 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.
A VMware ESX product memory leak vulnerability mentioned as part of a chained zero-day exploitation set with CVE-2025-22225 and CVE-2025-22224.
An actively exploited VMware zero-day vulnerability (details not provided in the content) that Broadcom fixed with security patches.
The version that knows your environment.
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.