VMware ESXi Arbitrary Write Vulnerability

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• cpe vmware/cloud foundationversion unspecified
• cpe vmware/esxi7.0
• vendor VMware ESXiversion unspecified

How to fix CVE-2025-22225

• Recommended remediation

  Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA due date Mar 25, 2025.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Mar 4, 2025 · Catalog

   Detected

   VMware ESXi contains an arbitrary write vulnerability. Successful exploitation allows an attacker with privileges within the VMX process to trigger an arbitrary kernel write leading to an escape of the sandbox.

2. Mar 4, 2025 · CISA KEV

   Known exploited

   Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

3. Mar 25, 2025 · CISA KEV

   Remediation due

   Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

4. Aug 3, 2026 · Catalog

   Updated

   VMware ESXi contains an arbitrary write vulnerability. Successful exploitation allows an attacker with privileges within the VMX process to trigger an arbitrary kernel write leading to an escape of the sandbox.

Sources

• CISA KEVConfirmed exploitationCVE-2025-22225

  VMware ESXi contains an arbitrary write vulnerability. Successful exploitation allows an attacker with privileges within the VMX process to trigger an arbitrary kernel write leading to an escape of the sandbox.

  cisa.gov
• CVE.orgVulnerability recordCVE-2025-22225

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2025-22225

  30-day exploitation probability 1.0%

  first.org
• NIST NVDVulnerability recordCVE-2025-22225

  VMware ESXi contains an arbitrary write vulnerability. A malicious actor with privileges within the VMX process may trigger an arbitrary kernel write leading to an escape of the sandbox.

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2025-22225

  VMware ESXi contains an arbitrary write vulnerability. Successful exploitation allows an attacker with privileges within the VMX process to trigger an arbitrary kernel write leading to an escape of the sandbox.

  vulncheck.com

References

• VulnCheck exploitation evidence · blog.qualys.com
• VulnCheck exploitation evidence · docs.google.com
• VulnCheck exploitation evidence · github.com
• CISA note · nvd.nist.gov
• VulnCheck exploitation evidence · slcyber.io
• CISA note · support.broadcom.com
• US Government Resource · cisa.gov
• VulnCheck exploitation evidence · cisa.gov

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.