CVE-2026-34674

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

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

Substance3D - Sampler versions 5.1.3 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CVSS v3
7.8
EG Score
7.8(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

August 27, 2026

Last Modified

August 28, 2026

References (1)

Vendor Advisories for CVE-2026-34674(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 17× in last 7d / 17× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-30 00:56 UTCGHSA enrichment
  3. 2026-08-29 13:52 UTCGHSA enrichment
  4. 2026-08-29 02:47 UTCEG score recompute
  5. 2026-08-29 02:46 UTCGHSA enrichment
  6. 2026-08-28 21:41 UTCEPSS rescore
  7. 2026-08-28 15:42 UTCGHSA enrichment
  8. 2026-08-28 11:37 UTCGHSA enrichment
  9. 2026-08-28 00:32 UTCEG score recompute
  10. 2026-08-28 00:32 UTCGHSA enrichment
  11. 2026-08-27 23:25 UTCEG score recompute
  12. 2026-08-27 23:25 UTCGHSA enrichment
  13. 2026-08-27 20:27 UTCEG score recompute
  14. 2026-08-27 20:27 UTCGHSA enrichment
  15. 2026-08-27 17:19 UTCEG score recompute
  16. 2026-08-27 16:46 UTCEG score recompute
  17. 2026-08-27 16:43 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-34674?
CVE-2026-34674 is a high vulnerability published on August 27, 2026. Substance3D - Sampler versions 5.1.3 and earlier are affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
When was CVE-2026-34674 disclosed?
CVE-2026-34674 was first published in the National Vulnerability Database on August 27, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34674 actively exploited?
CVE-2026-34674 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 85.3% of all scored CVEs.
What is the CVSS score of CVE-2026-34674?
CVE-2026-34674 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-34674?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34674, 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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