CVE-2026-40639

MEDIUMPre-NVD 5.75.7—
EchelonGraph scoreHIGH confidence

Score 5.7 from GitHub Security Advisory published 2026-06-09. a secondary CVSS source baseline 5.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.7Exploit: NoneExposed: 0

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

Dell Client Platform BIOS contains a Weak Encoding for Password vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to Elevation of Privileges.

CVSS v3
5.7
EG Score
5.7(high)
EPSS
2.1%
KEV
Not listed

Published

June 9, 2026

Last Modified

June 9, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

DSA-2026-197: Security Update for Dell Client Platform BIOS for a Weak Encoding for Password Vulnerability | Dell US

https://www.dell.com/support/kbdoc/en-us/000453482/dsa-2026-197

Vendor Advisories for CVE-2026-40639(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 19× in last 7d / 83× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 21:40 UTCEG score recompute
  6. 2026-07-05 21:40 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 20:38 UTCEG score recompute
  9. 2026-07-04 20:38 UTCGHSA enrichment
  10. 2026-07-03 19:40 UTCEG score recompute
  11. 2026-07-03 19:40 UTCGHSA enrichment
  12. 2026-07-02 18:43 UTCEG score recompute
  13. 2026-07-02 18:43 UTCGHSA enrichment
  14. 2026-07-01 17:43 UTCEG score recompute
  15. 2026-07-01 17:43 UTCGHSA enrichment
  16. 2026-07-01 15:06 UTCEPSS rescore
  17. 2026-06-30 23:22 UTCEPSS rescore
  18. 2026-06-30 16:45 UTCEG score recompute
  19. 2026-06-30 16:45 UTCGHSA enrichment
  20. 2026-06-29 15:47 UTCEG score recompute
  21. 2026-06-29 15:47 UTCGHSA enrichment
  22. 2026-06-29 14:06 UTCEPSS rescore
  23. 2026-06-28 14:50 UTCEG score recompute
  24. 2026-06-28 14:50 UTCGHSA enrichment
  25. 2026-06-28 14:07 UTCEPSS rescore
Show 58 more
  1. 2026-06-28 04:56 UTCEPSS rescore
  2. 2026-06-27 13:53 UTCEG score recompute
  3. 2026-06-27 13:53 UTCGHSA enrichment
  4. 2026-06-27 03:08 UTCEPSS rescore
  5. 2026-06-26 12:56 UTCEG score recompute
  6. 2026-06-26 12:55 UTCGHSA enrichment
  7. 2026-06-25 13:49 UTCEPSS rescore
  8. 2026-06-25 13:49 UTCEPSS rescore
  9. 2026-06-25 11:59 UTCEG score recompute
  10. 2026-06-25 11:59 UTCGHSA enrichment
  11. 2026-06-24 14:05 UTCEPSS rescore
  12. 2026-06-24 11:01 UTCEG score recompute
  13. 2026-06-24 11:01 UTCGHSA enrichment
  14. 2026-06-23 21:33 UTCEPSS rescore
  15. 2026-06-23 10:01 UTCEG score recompute
  16. 2026-06-23 10:01 UTCGHSA enrichment
  17. 2026-06-22 14:25 UTCEPSS rescore
  18. 2026-06-22 14:25 UTCEPSS rescore
  19. 2026-06-22 09:04 UTCEG score recompute
  20. 2026-06-22 09:03 UTCGHSA enrichment
  21. 2026-06-21 14:56 UTCEPSS rescore
  22. 2026-06-21 14:56 UTCEPSS rescore
  23. 2026-06-21 07:28 UTCEG score recompute
  24. 2026-06-21 07:28 UTCGHSA enrichment
  25. 2026-06-21 01:59 UTCEPSS rescore
  26. 2026-06-20 06:07 UTCEG score recompute
  27. 2026-06-20 06:07 UTCGHSA enrichment
  28. 2026-06-19 19:25 UTCEPSS rescore
  29. 2026-06-19 04:21 UTCEG score recompute
  30. 2026-06-19 04:21 UTCGHSA enrichment
  31. 2026-06-18 17:52 UTCEPSS rescore
  32. 2026-06-18 17:52 UTCEPSS rescore
  33. 2026-06-18 02:56 UTCEG score recompute
  34. 2026-06-18 02:56 UTCGHSA enrichment
  35. 2026-06-17 17:53 UTCEPSS rescore
  36. 2026-06-17 01:59 UTCEG score recompute
  37. 2026-06-17 01:59 UTCGHSA enrichment
  38. 2026-06-16 17:52 UTCEPSS rescore
  39. 2026-06-16 01:02 UTCEG score recompute
  40. 2026-06-16 01:02 UTCGHSA enrichment
  41. 2026-06-15 17:49 UTCEPSS rescore
  42. 2026-06-15 00:05 UTCEG score recompute
  43. 2026-06-15 00:05 UTCGHSA enrichment
  44. 2026-06-13 23:08 UTCEG score recompute
  45. 2026-06-13 23:08 UTCGHSA enrichment
  46. 2026-06-13 23:00 UTCEPSS rescore
  47. 2026-06-12 23:12 UTCEPSS rescore
  48. 2026-06-12 23:12 UTCEPSS rescore
  49. 2026-06-12 22:11 UTCEG score recompute
  50. 2026-06-12 22:11 UTCGHSA enrichment
  51. 2026-06-11 21:14 UTCEG score recompute
  52. 2026-06-11 21:14 UTCGHSA enrichment
  53. 2026-06-11 14:00 UTCEPSS rescore
  54. 2026-06-10 22:18 UTCEPSS rescore
  55. 2026-06-10 20:18 UTCEG score recompute
  56. 2026-06-10 20:18 UTCGHSA enrichment
  57. 2026-06-09 19:21 UTCEG score recompute
  58. 2026-06-09 19:21 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-40639?
CVE-2026-40639 is a medium vulnerability published on June 9, 2026. Dell Client Platform BIOS contains a Weak Encoding for Password vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to Elevation of Privileges.
When was CVE-2026-40639 disclosed?
CVE-2026-40639 was first published in the National Vulnerability Database on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40639 actively exploited?
CVE-2026-40639 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40639?
CVE-2026-40639 has a CVSS v3 base score of 5.7 (NVD).
How do I remediate CVE-2026-40639?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40639, 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-2026-40639

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