CVE-2026-40851

HIGHNVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. NVD baseline CVSS 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.4
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.4Exploit: NoneExposed: 0

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

A local attacker can perform a confusion attack on the cfgparser via a specially crafted file on an USB stick leading to code execution. This can result in a total loss of confidentiality, integrity and availability.

CVSS v3
8.4
EG Score
8.4(medium)
EPSS
3.2%
KEV
Not listed

Published

May 27, 2026

Last Modified

May 27, 2026

Advisory Details (1)

Auto-updated Jun 3, 2026
No patch confirmed yet.
generic

MB connect line: Multiple vulnerabilities in mbNET/mbNET.rokey/mbNET.mini

https://www.certvde.com/en/advisories/VDE-2026-054/

Vendor Advisories for CVE-2026-40851(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 6× in last 7d / 79× 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 158 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-40851?
CVE-2026-40851 is a high vulnerability published on May 27, 2026. A local attacker can perform a confusion attack on the cfgparser via a specially crafted file on an USB stick leading to code execution. This can result in a total loss of confidentiality, integrity and availability.
When was CVE-2026-40851 disclosed?
CVE-2026-40851 was first published in the National Vulnerability Database on May 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40851 actively exploited?
CVE-2026-40851 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40851?
CVE-2026-40851 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2026-40851?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40851, 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.

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