CVE-2023-34058

HIGHNVD 7.17.5▲
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2023-10-27. NVD baseline CVSS 7.1; sources differ by 0.4.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.1Exploit: NoneExposed: 0

A fix is available — apply it.

VMware Tools contains a SAML token signature bypass vulnerability. A malicious actor that has been granted Guest Operation Privileges https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-security/GUID-6A952214-0E5E-4CCF-9D2A-90948FF643EC.html  in a target virtual machine may be able to elevate their privileges if that target virtual machine has been assigned a more privileged Guest Alias https://vdc-download.vmware.com/vmwb-repository/dcr-public/d1902b0e-d479-46bf-8ac9-cee0e31e8ec0/07ce8dbd-db48-4261-9b8f-c6d3ad8ba472/vim.vm.guest.AliasManager.html .

CVSS v3
7.1
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
48.3%
KEV
Not listed

Published

October 27, 2023

Last Modified

March 6, 2025

References (14)

Patch Availability(12)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuopen-vm-tools-dev (2:10.2.0-3~ubuntu0.16.04.1+esm4) @ xenial2026-05-24ubuntu
ubuntuopen-vm-tools-sdmp (2:12.3.0-1ubuntu0.1) @ mantic2026-05-24ubuntu
redhatopen-vm-tools-0:11.3.5-1.el8_6.52023-11-15redhat
redhatopen-vm-tools-0:12.1.5-2.el8_8.42023-11-15redhat
redhatopen-vm-tools-0:12.2.5-3.el9_3.22023-11-15redhat
redhatopen-vm-tools-0:11.3.5-1.el9_0.52023-11-15redhat
redhatopen-vm-tools-0:12.1.5-1.el9_2.42023-11-15redhat
redhatopen-vm-tools-0:11.0.5-3.el7_9.92023-11-15redhat
redhatopen-vm-tools-0:12.2.5-3.el8_9.12023-11-15redhat
redhatopen-vm-tools-0:10.3.10-3.el8_1.52023-11-15redhat
redhatopen-vm-tools-0:11.2.0-2.el8_4.42023-11-15redhat
redhatopen-vm-tools-0:11.0.0-4.el8_2.42023-11-15redhat

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.

All Vendor Advisories

(13)

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 15× in last 7d / 55× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 116 total refreshes for this CVE.

  1. 2026-07-23 14:16 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-34058?
CVE-2023-34058 is a high vulnerability published on October 27, 2023. VMware Tools contains a SAML token signature bypass vulnerability. A malicious actor that has been granted Guest Operation Privileges https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-security/GUID-6A952214-0E5E-4CCF-9D2A-90948FF643EC.html in a target virtual machine may be able to elevate…
When was CVE-2023-34058 disclosed?
CVE-2023-34058 was first published in the National Vulnerability Database on October 27, 2023, with the most recent update on March 6, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-34058 actively exploited?
CVE-2023-34058 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 48.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-34058?
CVE-2023-34058 has a CVSS v3 base score of 7.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.5.
How do I remediate CVE-2023-34058?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-34058, 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

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