Exploited CVEs / VMware / CVE-2025-22225
CVE-2025-22225
VMware ESXi Arbitrary Write Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted, and the vulnerability is known to be used in ransomware campaigns. Federal agencies were required to remediate by 2025-03-25 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Broadcom (VMware) Security Advisories, linked below.
Actively exploited VMware ESXi vulnerability, High severity, CVSS 8.2. Added to the CISA KEV catalog 2025-03-04.
Risk summary
Updated July 28, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2025-22225
VMware ESXi's arbitrary write flaw lets an attacker already running inside the VMX process trigger a kernel write and escape the sandbox, CVSS 8.2, with confirmed ransomware use. Hypervisor escapes are how one compromised guest becomes every guest on the host; this was exploited in the wild in March 2025 as part of a chained trio.
Do this: Patch ESXi hosts before guest workloads and check them for unexpected packages or kernel modules.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2025-22225
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2025-22225
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2025-03-25 (past 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.
Official fix for CVE-2025-22225
The authoritative fix and affected-version list are published by the vendor. Find the ESXi advisory on Broadcom (VMware) Security Advisories.
Common questions about CVE-2025-22225
Is CVE-2025-22225 actively exploited?
Yes. CVE-2025-22225 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2025-03-04, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is <1%. CISA also reports it is known to be used in ransomware campaigns.
What is the CISA deadline and required action for CVE-2025-22225?
CISA set the federal (BOD 22-01) remediation due date at 2025-03-25, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
What fixes CVE-2025-22225?
The authoritative fix is in the vendor advisory: see Broadcom (VMware) Security Advisories for the patched ESXi versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2025-22225?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2025-22225's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
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