CVE Intelligence
CISA KEV Medium Memory corruption

CVE-2025-22226 — VMware ESXi, Workstation, and Fusion Information Disclosure Vulnerability

VMware ESXi, Workstation, and Fusion contain an information disclosure vulnerability due to an out-of-bounds read in HGFS. A malicious actor with administrative privileges to a virtual machine may be able to exploit this issue to leak memory from the vmx process.

Published Mar 4, 2025 · Updated Oct 13, 2026 · Sources: CISA Known Exploited Vulnerabilities, CVE Program (cve.org) e CISA ADP, NIST National Vulnerability Database, GitHub Security Advisories · CNA: vmware

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

CISA KEV · Mar 4, 2025
How the score was calculated
  • Confirmed exploitation (CISA KEV)+35
  • EPSS 1.8% (30-day exploitation probability)+12
  • Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Confirmed
CISA KEV, listed Mar 4, 2025
EPSS FIRST
1.77%
ahead of 78% of scored CVEs · Oct 14, 2026
Affects
Vmware
Cloud Foundation and 5 more
CVSS base
6.0
Medium · 4 source(s)
Prioritization reference: 7.1 provisional

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
Active
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

CISA required action CISA

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

US federal deadline: Mar 25, 2025 — passed 569 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Vmware Cloud Foundation, Vmware Esxi, Vmware Fusion…).
  2. Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
  3. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  4. Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Vmware Cloud Foundation versions not specified by the source Vulnerable NIST National Vulnerability Database
Vmware Esxi version 7.0-update_3lversion 7.0version 7.0-update_3mversion 7.0-update_3nversion 7.0-update_3oversion 7.0-update_3pversion 7.0-update_3qversion 7.0-update_3r
and 35 more version 8.0version 8.0-aversion 8.0-bversion 8.0-cversion 8.0-update_1version 8.0-update_1aversion 8.0-update_1cversion 8.0-update_1dversion 8.0-update_2version 8.0-update_2bversion 8.0-update_2cversion 8.0-update_3version 8.0-update_3bversion 8.0-update_3cversion 7.0-update_3jversion 7.0-betaversion 7.0-update_1version 7.0-update_1aversion 7.0-update_1bversion 7.0-update_1cversion 7.0-update_1dversion 7.0-update_1eversion 7.0-update_2version 7.0-update_2aversion 7.0-update_2cversion 7.0-update_2eversion 7.0-update_3version 7.0-update_3cversion 7.0-update_3dversion 7.0-update_3eversion 7.0-update_3fversion 7.0-update_3gversion 7.0-update_3iversion 7.0-update_3kversion 7.0-update_2d
Vulnerable NIST National Vulnerability Database
Vmware Fusion ≥ 13.0.0 and < 13.6.3 Vulnerable NIST National Vulnerability Database
Vmware Telco Cloud Infrastructure version 2.5version 2.7version 3.0version 2.2 Vulnerable NIST National Vulnerability Database
Vmware Telco Cloud Platform version 2.0version 2.5version 2.7version 3.0version 4.0version 4.0.1version 5.0 Vulnerable NIST National Vulnerability Database
Vmware Workstation ≥ 17.0 and < 17.6.3 Vulnerable NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Local
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
7.1 CVSS 3.1 High 2.5 4.0 security@vmware.com via NIST National Vulnerability Database
7.1 CVSS 3.1 High — — GitHub, Inc. via GitHub Security Advisories
7.1 CVSS 3.1 High — — vmware via CVE Program (cve.org) e CISA ADP
6.0 CVSS 3.1 Medium 1.5 4.0 nvd@nist.gov via NIST National Vulnerability Database
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N (score shown at the top: nvd@nist.gov)
Scoring entities (NIST, CNA, ADP) score independently; each score is shown with its origin. For prioritization we use 7.1 (security@vmware.com via NIST National Vulnerability Database) as a conservative provisional reference — not a definitive official score.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-125 · Out-of-bounds Read

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

Listed
Mar 4, 2025
Federal deadline
Mar 25, 2025
passed 569 day(s) ago
Ransomware use
Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

EPSS over time FIRST

Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 1.77%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
  • Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.
  • Hunt retroactively in logs from before Mar 4, 2025 (KEV listing): exploitation may have started earlier.
endpoint telemetry (EDR)crash dumps

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · vmware/esxi, vmware/cloud foundation, vmware/fusion, vmware/telco cloud infrastructure, vmware/telco cloud platform, vmw
    Oct 13, 2026 · NIST National Vulnerability Database
  • CVSS changed · 7.1 → 6.0
    Oct 13, 2026 · NIST National Vulnerability Database
  • Source status changed · Published → Analyzed
    Oct 13, 2026 · NIST National Vulnerability Database
  • Record published
    Oct 13, 2026
  • CVSS changed · 7.1
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Source status changed · → Published
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
  • Added to CISA KEV (detected)
    Oct 13, 2026 · CISA Known Exploited Vulnerabilities
  • Record created in this database
    Oct 13, 2026 · CISA Known Exploited Vulnerabilities
  • 2025
  • CVE published
    Mar 4, 2025 · vmware
  • Added to CISA KEV catalog
    Mar 3, 2025 · CISA

Source activity

Repeated readings are counted rather than listed.

  • 3× References added · Oct 13, 2026 – Oct 13, 2026
  • 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

4 on the record

Elsewhere on this site

Vmware
every CVE for this vendor
2025-03
what else CISA listed that month
Memory corruption
same class
CWE-125
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-59347 VMware Workstation and Fusion HGFS stack-based buffer-overflow vulnerability 8d
  • CVE-2026-59346 VMware Workstation and Fusion VMXNET3 integer-overflow vulnerability 8d
  • CVE-2026-41709 ESX insufficient logging vulnerability Jul 30, 2026
  • CVE-2026-59310 Broadcom VMware vCenter Path Traversal Vulnerability KEV Jul 30, 2026
  • CVE-2026-59309 vCenter authentication-bypass vulnerability Jul 30, 2026
  • CVE-2026-47876 VMXNET3 out-of-bounds write vulnerability Jul 30, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No fixed version, patch or mitigation documented.
  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-22226 is "VMware ESXi, Workstation, and Fusion Information Disclosure Vulnerability", rated Medium. It affects Cloud Foundation (Vmware); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 6.0 describes technical severity. EPSS 1.77% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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