How severe is CVE-2023-20867?

CVE-2023-20867 has a CVSS 3.x base score of 3.9, rated low severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-20867 being actively exploited?

Yes. CVE-2023-20867 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-06-23, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2023-20867?

CVE-2023-20867 primarily affects Vmware Tools. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20867?

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-2023-20867 have an EU (EUVD) identifier?

Yes. CVE-2023-20867 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-25040. It is also flagged as exploited in the EUVD (since 2023-06-23).

When was CVE-2023-20867 published?

CVE-2023-20867 was published on 2023-06-13 and last updated on 2026-06-17.

CVE-2023-20867

CVE-2023-20867 is a low-severity vulnerability in Vmware Tools with a CVSS 3.x base score of 3.9. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2023-06-23). The underlying weakness is classified as CWE-287.

Key facts

Severity: Low (CVSS 3.x base score 3.9)
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2023-06-23)
EU (EUVD) id: EUVD-2023-25040
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2023-06-23)
Weakness: CWE-287
Affected product: Vmware Tools
Published: 2023-06-13
Last modified: 2026-06-17

Description

A fully compromised ESXi host can force VMware Tools to fail to authenticate host-to-guest operations, impacting the confidentiality and integrity of the guest virtual machine.

Frequently asked questions

What is CVE-2023-20867?: A fully compromised ESXi host can force VMware Tools to fail to authenticate host-to-guest operations, impacting the confidentiality and integrity of the guest virtual machine.
How severe is CVE-2023-20867?: CVE-2023-20867 has a CVSS 3.x base score of 3.9, rated low severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-20867 being actively exploited?: Yes. CVE-2023-20867 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2023-06-23, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2023-20867?: CVE-2023-20867 primarily affects Vmware Tools. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-20867?: 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-2023-20867 have an EU (EUVD) identifier?: Yes. CVE-2023-20867 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-25040. It is also flagged as exploited in the EUVD (since 2023-06-23).
When was CVE-2023-20867 published?: CVE-2023-20867 was published on 2023-06-13 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:vmware:tools:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

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