CVE-2026-92947

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreHIGH confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-17. a secondary CVSS source baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 10.0Exploit: Elevated riskExposed: 0

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

vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive data exposure and potential denial-of-service.

CVSS v3
10.0
EG Score
10.0(high)
EG Risk
76(Attend)
EG Risk 76/100SSVC: Attend

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
Severity100% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 17, 2026

Advisory Details (2)

Auto-updated Sep 17, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Sandboxed code can read and write host-realm memory via Node's shared Buffer pool · Advisory · patriksimek/vm2 · GitHub

https://github.com/patriksimek/vm2/security/advisories/GHSA-fcqc-726x-5wfc
generic

vm2 before 3.11.7 Memory Disclosure via Buffer Pool | Advisories | VulnCheck

https://www.vulncheck.com/advisories/vm2-before-3.11.7-memory-disclosure-via-buffer-pool

Vendor Advisories for CVE-2026-92947(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 24× in last 7d / 24× 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.

  1. 2026-09-20 04:27 UTCGHSA enrichment
  2. 2026-09-20 00:17 UTCGHSA enrichment
  3. 2026-09-19 20:06 UTCGHSA enrichment
  4. 2026-09-19 15:56 UTCEG score recompute
  5. 2026-09-19 15:56 UTCGHSA enrichment
  6. 2026-09-19 11:42 UTCGHSA enrichment
  7. 2026-09-19 07:32 UTCGHSA enrichment
  8. 2026-09-19 03:22 UTCGHSA enrichment
  9. 2026-09-18 23:11 UTCEG score recompute
  10. 2026-09-18 23:11 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 19:01 UTCGHSA enrichment
  13. 2026-09-18 14:50 UTCGHSA enrichment
  14. 2026-09-18 10:40 UTCGHSA enrichment
  15. 2026-09-18 06:30 UTCGHSA enrichment
  16. 2026-09-18 02:20 UTCGHSA enrichment
  17. 2026-09-17 22:09 UTCGHSA enrichment
  18. 2026-09-17 17:58 UTCEG score recompute
  19. 2026-09-17 17:58 UTCGHSA enrichment
  20. 2026-09-17 15:54 UTCEG score recompute
  21. 2026-09-17 15:54 UTCGHSA enrichment
  22. 2026-09-17 14:22 UTCEG score recompute
  23. 2026-09-17 13:50 UTCEG score recompute
  24. 2026-09-17 13:49 UTCMITRE cvelistV5first tracked

Related CVEs

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Frequently asked(5)

What is CVE-2026-92947?
CVE-2026-92947 is a critical vulnerability published on September 17, 2026. vm2 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive data…
When was CVE-2026-92947 disclosed?
CVE-2026-92947 was first published in the National Vulnerability Database on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-92947 actively exploited?
CVE-2026-92947 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 63.0% of all scored CVEs.
What is the CVSS score of CVE-2026-92947?
CVE-2026-92947 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-92947?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-92947, 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

Explore the affected products and dependency analysis for CVE-2026-92947

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