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PatchSiren cyber security CVE debrief

CVE-2025-22226 VMware CVE debrief

CVE-2025-22226 is a VMware information disclosure vulnerability affecting ESXi, Workstation, and Fusion. CISA added it to the Known Exploited Vulnerabilities catalog on 2025-03-04, so defenders should treat it as an urgent remediation item rather than a routine patch task. The supplied corpus does not provide affected versions, a CVSS score, or a detailed attack path, so validation should start with the vendor advisory referenced by CISA and the official CVE/NVD records.

Vendor
VMware
Product
ESXi, Workstation, and Fusion
CVSS
HIGH 7.1
CISA KEV
Listed
Original CVE published
2025-03-04
Original CVE updated
2025-03-04
Advisory published
2025-03-04
Advisory updated
2025-03-04

Who should care

Virtualization and infrastructure teams running VMware ESXi, desktop virtualization administrators using Workstation or Fusion, security operations teams tracking CISA KEV items, and platform owners responsible for patching or isolating exposed hypervisors and management hosts.

Technical summary

The available source material identifies the issue only as an information disclosure vulnerability in VMware ESXi, Workstation, and Fusion. Because it is listed in CISA KEV, the risk posture is elevated: CISA treats it as a known-exploited issue and requires mitigation according to vendor instructions, with a due date of 2025-03-25 in the supplied timeline. The corpus does not include the underlying flaw type, exploitation method, or affected version range, so remediation planning should rely on the Broadcom/VMware security advisory and the linked CVE/NVD records.

Defensive priority

Emergency / immediate triage. The KEV listing and same-day publication date indicate this should be prioritized ahead of non-KEV maintenance, with completion targeted by the 2025-03-25 due date.

Recommended defensive actions

  • Inventory all VMware ESXi, Workstation, and Fusion deployments and identify the exact installed versions.
  • Review the vendor security advisory referenced by CISA and apply the specified patch or mitigation as soon as possible.
  • If mitigations are unavailable, follow CISA guidance and vendor instructions; for applicable cloud services, follow BOD 22-01 guidance.
  • Prioritize systems that are externally reachable, centrally managed, or host sensitive workloads.
  • Verify remediation before the KEV due date and document any exceptions or compensating controls.
  • Monitor affected environments for unusual management-plane activity or unexpected exposure while remediation is in progress.

Evidence notes

This debrief is based only on the supplied CISA KEV source item and the linked official records. The KEV metadata names VMware ESXi, Workstation, and Fusion and classifies the issue as an information disclosure vulnerability, with dateAdded 2025-03-04 and dueDate 2025-03-25. The source item notes reference Broadcom Security Advisory 25390 and the NVD detail page. No CVSS score, affected-version list, or technical root-cause details were included in the provided corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-22226 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-22226

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-22226 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-22226

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.