CVE-2026-59347

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-10-07. A secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.1Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

VMware Workstation and Fusion contain a stack-based buffer-overflow vulnerability in HGFS. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host.

Affected versions:

  • VMware Workstation: 25H2, 26H1 (fixed in 26H1u1)
  • VMware Fusion: 25H2, 26H1 (fixed in 26H1u1)

CVSS v3
8.1
EG Score
8.1HIGHhigh confidence
EG Risk
37
EG Risk 37/100

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 (value × EchelonGraph’s weight)
Severity81% × 45%
The EG Score, 8.1 of 10.
Exploitation0% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
9th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

Published

October 7, 2026

Last Modified

October 7, 2026

Advisory Details (1)

Auto-updated Oct 7, 2026
No fix on record yet.
generic

Support Content Notification - Support Portal - Broadcom support portal

https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/security-advisories/0/38288

Vendor Advisories for CVE-2026-59347(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 25× in last 7d / 25× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-11 11:32 UTCEG score recompute
  2. 2026-10-11 11:32 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  3. 2026-10-11 00:10 UTCEG score recompute
  4. 2026-10-11 00:10 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  6. 2026-10-10 12:46 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  7. 2026-10-10 01:22 UTCEG score recompute
  8. 2026-10-10 01:22 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-10-09 14:00 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  11. 2026-10-09 02:35 UTCEG score recompute
  12. 2026-10-09 02:35 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  13. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  14. 2026-10-08 15:13 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  15. 2026-10-08 03:38 UTCEG score recompute
  16. 2026-10-08 03:38 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  17. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  18. 2026-10-07 16:15 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  19. 2026-10-07 12:21 UTCEG score recompute
  20. 2026-10-07 12:21 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  21. 2026-10-07 11:37 UTCEG score recompute
  22. 2026-10-07 11:37 UTCGHSA enrichmentGHSA-54rf-87fx-f97x · GitHub severity HIGH · GitHub CVSS 8.1
  23. 2026-10-07 06:26 UTCEG score recompute
  24. 2026-10-07 05:52 UTCEG score recompute
  25. 2026-10-07 05:51 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-59347?
CVE-2026-59347 is a high vulnerability published on October 7, 2026. VMware Workstation and Fusion contain a stack-based buffer-overflow vulnerability in HGFS. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host. Affected versions: VMware…
When was the CVE record for CVE-2026-59347 published?
The CVE record for CVE-2026-59347 was published on October 7, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 7, 2026; the record at its source may have been updated since.
Is CVE-2026-59347 actively exploited?
CVE-2026-59347 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (9th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59347?
CVE-2026-59347 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-59347?
No fix for CVE-2026-59347 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-59347 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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