CVE-2023-20867

LOWNVD 3.99.0▲Trending — 5 sources updated this weekExploited in the wild

3.9

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.

CVSS v3: 3.9
EG Score: 9.0(high)
EPSS: 84.7%
KEV: ⚠ Exploited

Published

June 13, 2023

Last Modified

October 28, 2025

References (19)

security@vmwarehttp://www.openwall.com/lists/oss-security/2023/10/16/11
security@vmwarehttp://www.openwall.com/lists/oss-security/2023/10/16/2
security@vmwarehttps://lists.debian.org/debian-lts-announce/2023/08/msg00020.html
security@vmwarehttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVKQ6Y2JFJRWPFOZUOTFO3H27BK5GGOG/
security@vmwarehttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJNJMD67QIT6LXLKWSHFM47DCLRSMT6W/
security@vmwarehttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZJM6HDRQYS74JA7YNKQBFH2XSZ52HEWH/
security@vmwarehttps://security.netapp.com/advisory/ntap-20230725-0001/
security@vmwarehttps://www.debian.org/security/2023/dsa-5493
security@vmwarehttps://www.vmware.com/security/advisories/VMSA-2023-0013.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2023/10/16/11
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2023/10/16/2
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/08/msg00020.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVKQ6Y2JFJRWPFOZUOTFO3H27BK5GGOG/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJNJMD67QIT6LXLKWSHFM47DCLRSMT6W/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZJM6HDRQYS74JA7YNKQBFH2XSZ52HEWH/

Patch Availability(8)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	open-vm-tools-dev (2:11.0.5-4ubuntu0.18.04.3+esm1) @ bionic	2026-06-07	ubuntu
redhat	open-vm-tools-0:11.0.0-4.el8_2.2	2023-06-29	redhat
redhat	open-vm-tools-0:11.3.5-1.el8_6.2	2023-06-29	redhat
redhat	open-vm-tools-0:12.1.5-1.el9_2.1	2023-06-29	redhat
redhat	open-vm-tools-0:11.3.5-1.el9_0.2	2023-06-29	redhat
redhat	open-vm-tools-0:11.0.5-3.el7_9.6	2023-06-29	redhat
redhat	open-vm-tools-0:12.1.5-2.el8_8	2023-06-29	redhat
redhat	open-vm-tools-0:11.2.0-2.el8_4.2	2023-06-29	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-287Improper Authentication

All Vendor Advisories

(8)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-07 07:33 UTCEG score recompute
2026-06-07 07:33 UTCVendor advisory
2026-06-07 07:33 UTCGHSA enrichment
2026-06-07 03:20 UTCEG score recompute
2026-06-07 03:20 UTCVendor advisory
2026-06-07 03:20 UTCGHSA enrichment
2026-06-06 23:07 UTCEG score recompute
2026-06-06 23:07 UTCVendor advisory
2026-06-06 23:07 UTCGHSA enrichment
2026-06-06 18:54 UTCEG score recompute
2026-06-06 18:54 UTCVendor advisory
2026-06-06 18:54 UTCGHSA enrichment
2026-06-06 14:41 UTCEG score recompute
2026-06-06 14:41 UTCVendor advisory
2026-06-06 14:41 UTCGHSA enrichment
2026-06-06 13:46 UTCepss_batch
2026-06-06 13:46 UTCepss_batch
2026-06-06 10:27 UTCEG score recompute
2026-06-06 10:27 UTCVendor advisory
2026-06-06 10:27 UTCGHSA enrichment

Frequently asked(6)

What is CVE-2023-20867?

CVE-2023-20867 is a low vulnerability published on June 13, 2023. 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.

When was CVE-2023-20867 disclosed?

CVE-2023-20867 was first published in the National Vulnerability Database on June 13, 2023, with the most recent update on October 28, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-20867 actively exploited?

Yes. CISA added CVE-2023-20867 to the Known Exploited Vulnerabilities catalog on June 23, 2023, affecting VMware Tools. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2023-20867?

CVE-2023-20867 has a CVSS v3 base score of 3.9 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2023-20867?

CVE-2023-20867 affects VMware Tools. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2023-20867?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-20867, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-20867

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Is Your Infrastructure Affected by CVE-2023-20867?

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CVE-2023-20867

Published

Last Modified

References (19)

Patch Availability(8)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-20867?

Same vendor

Same CWE

CVE-2023-20867

📅 Published

🔄 Last Modified

🔗 References (19)

Patch Availability(8)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-20867?

🔗 Related CVEs(same vendor + same CWE)

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Published

Last Modified

References (19)

Frequently asked(6)

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