CVE-2026-6387

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM 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(medium)
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 24, 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 21× in last 7d / 99× 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 134 total refreshes for this CVE.

  1. 2026-09-19 16:19 UTCEG score recompute
  2. 2026-09-19 16:18 UTCGHSA enrichment
  3. 2026-09-19 03:07 UTCEG score recompute
  4. 2026-09-19 03:07 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 14:31 UTCGHSA enrichment
  7. 2026-09-18 01:55 UTCEG score recompute
  8. 2026-09-18 01:55 UTCGHSA enrichment
  9. 2026-09-17 13:19 UTCGHSA enrichment
  10. 2026-09-16 23:59 UTCEG score recompute
  11. 2026-09-16 23:59 UTCGHSA enrichment
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 01:40 UTCGHSA enrichment
  14. 2026-09-15 13:04 UTCEG score recompute
  15. 2026-09-15 13:04 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 00:21 UTCGHSA enrichment
  18. 2026-09-14 11:21 UTCGHSA enrichment
  19. 2026-09-13 22:45 UTCEG score recompute
  20. 2026-09-13 22:45 UTCGHSA enrichment
  21. 2026-09-13 10:09 UTCGHSA enrichment
  22. 2026-09-12 21:33 UTCEG score recompute
  23. 2026-09-12 21:33 UTCGHSA enrichment
  24. 2026-09-12 15:02 UTCEPSS rescore
  25. 2026-09-12 08:57 UTCGHSA enrichment
Show 75 more
  1. 2026-09-11 20:21 UTCEG score recompute
  2. 2026-09-11 20:21 UTCGHSA enrichment
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 09:37 UTCEPSS rescore
  5. 2026-09-11 07:32 UTCGHSA enrichment
  6. 2026-09-10 18:56 UTCEG score recompute
  7. 2026-09-10 18:56 UTCGHSA enrichment
  8. 2026-09-10 06:20 UTCGHSA enrichment
  9. 2026-09-09 17:44 UTCGHSA enrichment
  10. 2026-09-09 04:57 UTCEG score recompute
  11. 2026-09-09 04:57 UTCGHSA enrichment
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-08 06:58 UTCGHSA enrichment
  14. 2026-09-07 18:20 UTCEG score recompute
  15. 2026-09-07 18:20 UTCGHSA enrichment
  16. 2026-09-07 16:01 UTCEPSS rescore
  17. 2026-09-07 05:44 UTCGHSA enrichment
  18. 2026-09-06 16:38 UTCEG score recompute
  19. 2026-09-06 16:38 UTCGHSA enrichment
  20. 2026-09-06 13:47 UTCEPSS rescore
  21. 2026-09-06 04:01 UTCGHSA enrichment
  22. 2026-09-05 15:25 UTCGHSA enrichment
  23. 2026-09-05 02:49 UTCEG score recompute
  24. 2026-09-05 02:49 UTCGHSA enrichment
  25. 2026-09-04 13:53 UTCEG score recompute
  26. 2026-09-04 13:53 UTCGHSA enrichment
  27. 2026-09-04 05:07 UTCEPSS rescore
  28. 2026-09-04 01:16 UTCGHSA enrichment
  29. 2026-09-03 12:36 UTCGHSA enrichment
  30. 2026-09-02 23:11 UTCEG score recompute
  31. 2026-09-02 23:11 UTCGHSA enrichment
  32. 2026-09-02 14:12 UTCEPSS rescore
  33. 2026-09-02 01:50 UTCEG score recompute
  34. 2026-09-02 01:50 UTCGHSA enrichment
  35. 2026-09-01 13:54 UTCEPSS rescore
  36. 2026-09-01 13:11 UTCEG score recompute
  37. 2026-09-01 13:11 UTCGHSA enrichment
  38. 2026-09-01 04:40 UTCEPSS rescore
  39. 2026-09-01 00:24 UTCGHSA enrichment
  40. 2026-08-31 11:39 UTCGHSA enrichment
  41. 2026-08-30 21:47 UTCEG score recompute
  42. 2026-08-30 21:47 UTCGHSA enrichment
  43. 2026-08-30 19:17 UTCEPSS rescore
  44. 2026-08-30 09:11 UTCEG score recompute
  45. 2026-08-30 09:11 UTCGHSA enrichment
  46. 2026-08-30 01:22 UTCEPSS rescore
  47. 2026-08-29 20:26 UTCGHSA enrichment
  48. 2026-08-29 07:40 UTCEG score recompute
  49. 2026-08-29 07:40 UTCGHSA enrichment
  50. 2026-08-28 21:42 UTCEPSS rescore
  51. 2026-08-28 10:09 UTCGHSA enrichment
  52. 2026-08-27 20:40 UTCEG score recompute
  53. 2026-08-27 20:40 UTCGHSA enrichment
  54. 2026-08-27 08:04 UTCGHSA enrichment
  55. 2026-08-26 19:26 UTCEG score recompute
  56. 2026-08-26 19:26 UTCGHSA enrichment
  57. 2026-08-26 14:47 UTCEPSS rescore
  58. 2026-08-26 06:49 UTCGHSA enrichment
  59. 2026-08-25 18:13 UTCEG score recompute
  60. 2026-08-25 18:13 UTCGHSA enrichment
  61. 2026-08-25 13:49 UTCEPSS rescore
  62. 2026-08-25 05:36 UTCGHSA enrichment
  63. 2026-08-24 17:00 UTCEG score recompute
  64. 2026-08-24 17:00 UTCGHSA enrichment
  65. 2026-08-24 04:56 UTCGHSA enrichment
  66. 2026-08-23 16:21 UTCGHSA enrichment
  67. 2026-08-23 03:45 UTCGHSA enrichment
  68. 2026-08-22 15:10 UTCGHSA enrichment
  69. 2026-08-22 02:34 UTCEG score recompute
  70. 2026-08-22 02:34 UTCGHSA enrichment
  71. 2026-08-21 23:49 UTCEPSS rescore
  72. 2026-08-21 13:59 UTCGHSA enrichment
  73. 2026-08-21 01:23 UTCEG score recompute
  74. 2026-08-21 01:23 UTCGHSA enrichment
  75. 2026-08-20 22:56 UTCEPSS rescore

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, with the most recent update on August 24, 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 96.8% 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

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