CVE-2026-40139

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-06. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support. Improper processing of authentication requests may allow an unauthenticated remote attacker to bypass access controls and gain unauthorized access to the appliance, including accounts with elevated privileges. Exploitation requires a specific authentication configuration to be enabled.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

July 6, 2026

Last Modified

July 7, 2026

References (1)

Vendor Advisories for CVE-2026-40139(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 44× in last 7d / 136× 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 136 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-40139?
CVE-2026-40139 is a critical vulnerability published on July 6, 2026. A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support. Improper processing of authentication requests may allow an unauthenticated remote attacker to bypass access controls and gain unauthorized access to the appliance, including accounts…
When was CVE-2026-40139 disclosed?
CVE-2026-40139 was first published in the National Vulnerability Database on July 6, 2026, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40139 actively exploited?
CVE-2026-40139 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 51.4% of all scored CVEs.
What is the CVSS score of CVE-2026-40139?
CVE-2026-40139 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-40139?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40139, 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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