Security readout for executives and security teams
Plain-English summary
This VMware ESXi flaw can let an already-privileged actor inside the VMX process write to the ESXi kernel and escape a sandbox. Because CISA lists CVE-2025-22225 in KEV, treat it as exploited and urgent for virtualization estates.
Executive priority
High priority. This affects core virtualization infrastructure and is KEV-listed, meaning delayed remediation leaves critical workloads exposed to a known exploited path.
Technical view
CVE-2025-22225 is a CWE-123 arbitrary write in VMware ESXi. The CVSS 3.1 score is 8.2 with local access, low complexity, high privileges, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely in VMware ESXi 8.0 and 7.0, plus VMware Cloud Foundation 5.x/4.5.x and listed Telco Cloud Platform or Infrastructure versions using affected ESXi components.
Exploitation context
CISA KEV status supports active exploitation. The provided sources do not describe exploit details, campaigns, prerequisites beyond VMX-process privileges, or whether exploitation is widespread.
Researcher notes
Do not assume remote unauthenticated exposure. The source states the attacker needs privileges within the VMX process. Evidence supplied does not include patch build numbers, indicators of compromise, or exploit mechanics.
Mitigation direction
- Inventory ESXi, VMware Cloud Foundation, and VMware Telco Cloud deployments.
- Check Broadcom advisory 25390 for fixed versions and official remediation guidance.
- Prioritize remediation for internet-adjacent or high-value virtualization clusters.
- Confirm cloud or managed VMware environments are covered by provider remediation.
- Track CISA KEV deadlines and internal exception approvals.
Validation and detection
- Compare deployed product versions against the affected version ranges in the advisory.
- Verify each ESXi host reports the remediated Broadcom-recommended build.
- Review virtualization platform logs for unusual privileged VMX-process activity.
- Confirm VCF and Telco Cloud stacks have received ESXi component remediation.
- Document any unpatched systems and compensating controls.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-123: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-22225 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.2 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H1.56Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/25390CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-22225CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Write-what-where Condition
Write-what-where Condition represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.