How severe is CVE-2025-22226?

CVE-2025-22226 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-22226 being actively exploited?

Yes. CVE-2025-22226 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-03-04, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-22226?

CVE-2025-22226 primarily affects Vmware Esxi. In total, 57 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-22226?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-22226 have an EU (EUVD) identifier?

Yes. CVE-2025-22226 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7605. It is also flagged as exploited in the EUVD (since 2025-03-04).

When was CVE-2025-22226 published?

CVE-2025-22226 was published on 2025-03-04 and last updated on 2026-06-17.

CVE-2025-22226

CVE-2025-22226 is a high-severity vulnerability in Vmware Esxi with a CVSS 3.x base score of 7.1. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-03-04). The underlying weakness is classified as CWE-125.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2025-03-04)
EU (EUVD) id: EUVD-2025-7605
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-03-04)
Weakness: CWE-125
Affected product: Vmware Esxi
Published: 2025-03-04
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2025-22226?: 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.
How severe is CVE-2025-22226?: CVE-2025-22226 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-22226 being actively exploited?: Yes. CVE-2025-22226 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-03-04, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2025-22226?: CVE-2025-22226 primarily affects Vmware Esxi. In total, 57 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-22226?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2025-22226 have an EU (EUVD) identifier?: Yes. CVE-2025-22226 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7605. It is also flagged as exploited in the EUVD (since 2025-03-04).
When was CVE-2025-22226 published?: CVE-2025-22226 was published on 2025-03-04 and last updated on 2026-06-17.

References

Affected products (57)

cpe:2.3:o:vmware:esxi:7.0:-:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:beta:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_1:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_1a:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_1b:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_1c:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_1d:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_1e:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_2:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_2a:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_2c:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_2d:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_2e:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3c:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3d:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3e:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3f:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3g:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3i:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3j:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3k:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3l:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3m:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3n:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3o:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3p:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3q:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3r:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:-:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:a:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:b:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:c:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:update_1:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:update_1a:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:update_1c:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:update_1d:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:update_2:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:update_2b:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:8.0:update_2c:*:*:*:*:*:*

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CVE-2019-5544 — Critical (CVSS 9.8): OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue. VMware has evaluated the severity…
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Other CWE-125 (Out-of-bounds Read) vulnerabilities

CVE-2026-24826 — Critical (CVSS 10.0): Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read,…
CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

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