CVE-2026-40138

HIGHNVD 8.18.1—
EchelonGraph scoreHIGH 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(high)
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
36%
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 23× in last 7d / 74× 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. 2026-07-31 11:10 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 08:26 UTCEG score recompute
  6. 2026-07-30 08:26 UTCGHSA enrichment
  7. 2026-07-30 01:30 UTCEPSS rescore
  8. 2026-07-29 19:07 UTCGHSA enrichment
  9. 2026-07-29 06:07 UTCGHSA enrichment
  10. 2026-07-28 17:18 UTCEG score recompute
  11. 2026-07-28 17:18 UTCGHSA enrichment
  12. 2026-07-28 04:32 UTCGHSA enrichment
  13. 2026-07-27 15:46 UTCEG score recompute
  14. 2026-07-27 15:46 UTCGHSA enrichment
  15. 2026-07-27 14:13 UTCEPSS rescore
  16. 2026-07-27 01:33 UTCEG score recompute
  17. 2026-07-27 01:33 UTCGHSA enrichment
  18. 2026-07-26 14:54 UTCEPSS rescore
  19. 2026-07-26 14:54 UTCEPSS rescore
  20. 2026-07-26 12:47 UTCEG score recompute
  21. 2026-07-26 12:47 UTCGHSA enrichment
  22. 2026-07-25 14:18 UTCEPSS rescore
  23. 2026-07-25 14:18 UTCEPSS rescore
  24. 2026-07-24 14:17 UTCEPSS rescore
  25. 2026-07-24 14:17 UTCEPSS rescore
Show 49 more
  1. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 03:11 UTCEG score recompute
  4. 2026-07-22 14:08 UTCEPSS rescore
  5. 2026-07-21 15:24 UTCEPSS rescore
  6. 2026-07-20 17:08 UTCEPSS rescore
  7. 2026-07-19 14:31 UTCEPSS rescore
  8. 2026-07-19 02:29 UTCEPSS rescore
  9. 2026-07-18 10:04 UTCEPSS rescore
  10. 2026-07-17 05:58 UTCGHSA enrichment
  11. 2026-07-16 17:13 UTCGHSA enrichment
  12. 2026-07-16 17:03 UTCEPSS rescore
  13. 2026-07-16 04:28 UTCGHSA enrichment
  14. 2026-07-15 16:57 UTCEPSS rescore
  15. 2026-07-15 16:57 UTCEPSS rescore
  16. 2026-07-15 15:42 UTCGHSA enrichment
  17. 2026-07-15 02:57 UTCGHSA enrichment
  18. 2026-07-15 02:00 UTCEPSS rescore
  19. 2026-07-14 14:12 UTCGHSA enrichment
  20. 2026-07-14 01:27 UTCGHSA enrichment
  21. 2026-07-13 22:30 UTCEPSS rescore
  22. 2026-07-13 12:42 UTCGHSA enrichment
  23. 2026-07-13 06:13 UTCEPSS rescore
  24. 2026-07-13 06:13 UTCEPSS rescore
  25. 2026-07-12 23:57 UTCGHSA enrichment
  26. 2026-07-12 11:11 UTCGHSA enrichment
  27. 2026-07-12 05:46 UTCEPSS rescore
  28. 2026-07-11 22:25 UTCGHSA enrichment
  29. 2026-07-11 09:40 UTCGHSA enrichment
  30. 2026-07-11 08:27 UTCEPSS rescore
  31. 2026-07-10 20:55 UTCGHSA enrichment
  32. 2026-07-10 08:10 UTCGHSA enrichment
  33. 2026-07-09 19:25 UTCGHSA enrichment
  34. 2026-07-09 19:10 UTCEPSS rescore
  35. 2026-07-09 06:40 UTCGHSA enrichment
  36. 2026-07-08 17:55 UTCGHSA enrichment
  37. 2026-07-08 15:15 UTCEPSS rescore
  38. 2026-07-08 05:10 UTCGHSA enrichment
  39. 2026-07-07 16:24 UTCEG score recompute▼ 1.10
  40. 2026-07-07 16:23 UTCGHSA enrichment
  41. 2026-07-07 16:12 UTCNVD updateCVSS v3 → 8.1 · severity → HIGH
  42. 2026-07-07 13:46 UTCEPSS rescore
  43. 2026-07-07 12:24 UTCGHSA enrichment
  44. 2026-07-07 08:27 UTCGHSA enrichment
  45. 2026-07-07 04:29 UTCGHSA enrichment
  46. 2026-07-07 00:33 UTCGHSA enrichment
  47. 2026-07-06 20:37 UTCGHSA enrichment
  48. 2026-07-06 16:43 UTCEG score recompute
  49. 2026-07-06 16:41 UTCMITRE cvelistV5first tracked

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 63.7% 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

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