CVE-2026-40138

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-06. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: 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 and Privileged Remote Access. Improper validation of authentication data may allow a network-positioned 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
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

July 6, 2026

Last Modified

July 7, 2026

References (1)

Vendor Advisories for CVE-2026-40138(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 / 105× 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 179 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-40138?
CVE-2026-40138 is a high vulnerability published on July 6, 2026. A critical pre-authentication vulnerability exists in the authentication subsystem of BeyondTrust Remote Support and Privileged Remote Access. Improper validation of authentication data may allow a network-positioned attacker to bypass access controls and gain unauthorized access to the appliance,…
When was CVE-2026-40138 disclosed?
CVE-2026-40138 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-2026-40138 actively exploited?
CVE-2026-40138 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 62.0% of all scored CVEs.
What is the CVSS score of CVE-2026-40138?
CVE-2026-40138 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-40138?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40138, 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-2026-40138

Explore →

Is Your Infrastructure Affected by CVE-2026-40138?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs