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
Trending — 3 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: None knownExposed: 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)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity84% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
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 10× in last 7d / 73× 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 203 total refreshes for this CVE.

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

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 0% probability of exploitation in the next 30 days, which ranks it in the top 96.9% of all scored CVEs.
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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