CVE-2026-6387

HIGHPre-NVD 7.07.0—
EchelonGraph scoreHIGH confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-08-13. a secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: None knownExposed: 0

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

A potential authentication bypass vulnerability was reported in Lenovo System Update that could allow a local authenticated user to execute arbitrary code with elevated privileges.

CVSS v3
7.0
EG Score
7.0(high)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity70% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 13, 2026

References (2)

Vendor Advisories for CVE-2026-6387(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 29× in last 7d / 37× 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. 2026-08-21 01:23 UTCEG score recompute
  2. 2026-08-21 01:23 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 12:48 UTCGHSA enrichment
  5. 2026-08-20 00:12 UTCEG score recompute
  6. 2026-08-20 00:12 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 11:36 UTCGHSA enrichment
  9. 2026-08-18 22:59 UTCEG score recompute
  10. 2026-08-18 22:59 UTCGHSA enrichment
  11. 2026-08-18 13:49 UTCEPSS rescore
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 10:24 UTCGHSA enrichment
  14. 2026-08-17 21:46 UTCEG score recompute
  15. 2026-08-17 21:46 UTCGHSA enrichment
  16. 2026-08-17 13:47 UTCEPSS rescore
  17. 2026-08-17 09:11 UTCGHSA enrichment
  18. 2026-08-16 20:35 UTCEG score recompute
  19. 2026-08-16 20:35 UTCGHSA enrichment
  20. 2026-08-16 14:56 UTCEPSS rescore
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 07:59 UTCEG score recompute
  23. 2026-08-16 07:59 UTCGHSA enrichment
  24. 2026-08-16 02:15 UTCEPSS rescore
  25. 2026-08-15 19:24 UTCGHSA enrichment
Show 12 more
  1. 2026-08-15 06:48 UTCEG score recompute
  2. 2026-08-15 06:48 UTCGHSA enrichment
  3. 2026-08-15 01:31 UTCEPSS rescore
  4. 2026-08-14 17:44 UTCGHSA enrichment
  5. 2026-08-14 05:01 UTCGHSA enrichment
  6. 2026-08-13 16:25 UTCEG score recompute
  7. 2026-08-13 16:25 UTCGHSA enrichment
  8. 2026-08-13 16:17 UTCEG score recompute
  9. 2026-08-13 16:17 UTCGHSA enrichment
  10. 2026-08-13 15:23 UTCEG score recompute
  11. 2026-08-13 15:12 UTCEG score recompute
  12. 2026-08-13 15:11 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-6387?
CVE-2026-6387 is a high vulnerability published on August 13, 2026. A potential authentication bypass vulnerability was reported in Lenovo System Update that could allow a local authenticated user to execute arbitrary code with elevated privileges.
When was CVE-2026-6387 disclosed?
CVE-2026-6387 was first published in the National Vulnerability Database on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6387 actively exploited?
CVE-2026-6387 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 96.7% of all scored CVEs.
What is the CVSS score of CVE-2026-6387?
CVE-2026-6387 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2026-6387?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6387, 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-2026-6387

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