CVE-2026-76639

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

Unitree G1 EDU firmware through 1.5.2 contains an unauthenticated remote code execution vulnerability that allows network-adjacent attackers to execute arbitrary commands as root by chaining three weaknesses: an unauthenticated WebRTC-to-DDS bridge on TCP port 9991, a static AES-128 key stored with world-readable permissions, and a path traversal flaw in the chat_go knowledge upload API. Attackers can publish DDS control messages to restart the bashrunner service, plant a malicious payload in its script execution directory via path traversal, and trigger execution of that payload as uid 0 through the bashrunner shell subprocess.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
52%
KEV
Not listed

Published

August 27, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Aug 27, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Unitree G1 EDU 1.5.2 Unauthenticated RCE via DDS Bridge and Path Traversal | Advisories | VulnCheck

https://www.vulncheck.com/advisories/unitree-g1-edu-unauthenticated-rce-via-dds-bridge-and-path-traversal
generic🟡 PoC Available

GitHub - OlivierLaflamme/UniBLEed: Unitree G1 RCE PoC & Scripts (CVE-2026-76639 / CVE-2026-76640) technical details at boschko.ca/g1-ble-rce/ · GitHub

https://github.com/OlivierLaflamme/UniBLEed
generic

UniBLEed: Unauthenticated Root RCE on Any Unitree G1 Humanoid Robot Within Bluetooth Range

https://boschko.ca/g1-ble-rce/

Vendor Advisories for CVE-2026-76639(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 25× in last 7d / 96× 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. 2026-09-21 05:27 UTCEG score recompute
  2. 2026-09-21 05:27 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 15:42 UTCGHSA enrichment
  5. 2026-09-20 02:59 UTCEG score recompute
  6. 2026-09-20 02:59 UTCGHSA enrichment
  7. 2026-09-19 14:15 UTCGHSA enrichment
  8. 2026-09-19 01:32 UTCEG score recompute
  9. 2026-09-19 01:32 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 12:45 UTCGHSA enrichment
  12. 2026-09-18 00:02 UTCEG score recompute
  13. 2026-09-18 00:02 UTCGHSA enrichment
  14. 2026-09-17 10:51 UTCGHSA enrichment
  15. 2026-09-16 21:58 UTCEG score recompute
  16. 2026-09-16 21:58 UTCGHSA enrichment
  17. 2026-09-16 14:08 UTCEPSS rescore
  18. 2026-09-16 09:15 UTCEG score recompute
  19. 2026-09-16 09:15 UTCGHSA enrichment
  20. 2026-09-16 05:15 UTCEPSS rescore
  21. 2026-09-15 20:16 UTCGHSA enrichment
  22. 2026-09-15 07:33 UTCEG score recompute
  23. 2026-09-15 07:32 UTCGHSA enrichment
  24. 2026-09-15 03:12 UTCEPSS rescore
  25. 2026-09-14 18:48 UTCGHSA enrichment
Show 71 more
  1. 2026-09-14 05:45 UTCGHSA enrichment
  2. 2026-09-13 17:02 UTCEG score recompute
  3. 2026-09-13 17:02 UTCGHSA enrichment
  4. 2026-09-13 04:19 UTCGHSA enrichment
  5. 2026-09-12 15:35 UTCEG score recompute
  6. 2026-09-12 15:35 UTCGHSA enrichment
  7. 2026-09-12 15:02 UTCEPSS rescore
  8. 2026-09-12 02:52 UTCEG score recompute
  9. 2026-09-12 02:52 UTCGHSA enrichment
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 14:08 UTCEG score recompute
  12. 2026-09-11 14:08 UTCGHSA enrichment
  13. 2026-09-11 01:25 UTCGHSA enrichment
  14. 2026-09-10 12:42 UTCEG score recompute
  15. 2026-09-10 12:42 UTCGHSA enrichment
  16. 2026-09-10 09:35 UTCEPSS rescore
  17. 2026-09-09 23:59 UTCGHSA enrichment
  18. 2026-09-09 09:35 UTCEG score recompute
  19. 2026-09-09 09:35 UTCGHSA enrichment
  20. 2026-09-08 22:01 UTCEPSS rescore
  21. 2026-09-08 20:52 UTCGHSA enrichment
  22. 2026-09-08 05:58 UTCGHSA enrichment
  23. 2026-09-07 17:13 UTCEG score recompute
  24. 2026-09-07 17:13 UTCGHSA enrichment
  25. 2026-09-07 04:29 UTCGHSA enrichment
  26. 2026-09-06 15:45 UTCEG score recompute
  27. 2026-09-06 15:45 UTCGHSA enrichment
  28. 2026-09-06 13:48 UTCEPSS rescore
  29. 2026-09-06 03:01 UTCEG score recompute
  30. 2026-09-06 03:01 UTCGHSA enrichment
  31. 2026-09-05 14:17 UTCGHSA enrichment
  32. 2026-09-05 01:33 UTCEG score recompute
  33. 2026-09-05 01:33 UTCGHSA enrichment
  34. 2026-09-04 12:50 UTCEG score recompute
  35. 2026-09-04 12:50 UTCGHSA enrichment
  36. 2026-09-04 05:07 UTCEPSS rescore
  37. 2026-09-04 00:07 UTCGHSA enrichment
  38. 2026-09-03 11:22 UTCGHSA enrichment
  39. 2026-09-02 22:39 UTCEG score recompute
  40. 2026-09-02 22:39 UTCGHSA enrichment
  41. 2026-09-02 14:12 UTCEPSS rescore
  42. 2026-09-02 09:55 UTCGHSA enrichment
  43. 2026-09-01 21:11 UTCEG score recompute
  44. 2026-09-01 21:11 UTCGHSA enrichment
  45. 2026-09-01 13:54 UTCEPSS rescore
  46. 2026-09-01 08:17 UTCEG score recompute
  47. 2026-09-01 08:17 UTCGHSA enrichment
  48. 2026-09-01 04:40 UTCEPSS rescore
  49. 2026-09-01 04:40 UTCEPSS rescore
  50. 2026-08-31 19:33 UTCEG score recompute
  51. 2026-08-31 19:33 UTCGHSA enrichment
  52. 2026-08-31 19:11 UTCEG score recompute
  53. 2026-08-31 19:10 UTCGHSA enrichment
  54. 2026-08-31 17:12 UTCGHSA enrichment
  55. 2026-08-31 02:52 UTCEG score recompute
  56. 2026-08-31 02:52 UTCGHSA enrichment
  57. 2026-08-30 19:18 UTCEPSS rescore
  58. 2026-08-30 19:17 UTCEPSS rescore
  59. 2026-08-30 14:09 UTCGHSA enrichment
  60. 2026-08-30 01:23 UTCEG score recompute
  61. 2026-08-30 01:23 UTCGHSA enrichment
  62. 2026-08-30 01:22 UTCEPSS rescore
  63. 2026-08-29 12:39 UTCGHSA enrichment
  64. 2026-08-28 23:53 UTCEG score recompute
  65. 2026-08-28 23:52 UTCGHSA enrichment
  66. 2026-08-28 21:42 UTCEPSS rescore
  67. 2026-08-28 09:11 UTCEG score recompute
  68. 2026-08-28 09:10 UTCGHSA enrichment
  69. 2026-08-27 20:27 UTCEG score recompute
  70. 2026-08-27 20:16 UTCEG score recompute
  71. 2026-08-27 20:13 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCOlivierLaflamme/UniBLEed
    First seen Aug 24, 2026

    Unitree G1 RCE PoC & Scripts (CVE-2026-76639 / CVE-2026-76640) technical details at boschko.ca/g1-ble-rce/

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-76639?
CVE-2026-76639 is a high vulnerability published on August 27, 2026. Unitree G1 EDU firmware through 1.5.2 contains an unauthenticated remote code execution vulnerability that allows network-adjacent attackers to execute arbitrary commands as root by chaining three weaknesses: an unauthenticated WebRTC-to-DDS bridge on TCP port 9991, a static AES-128 key stored with…
When was CVE-2026-76639 disclosed?
CVE-2026-76639 was first published in the National Vulnerability Database on August 27, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76639 actively exploited?
CVE-2026-76639 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 47.8% of all scored CVEs.
What is the CVSS score of CVE-2026-76639?
CVE-2026-76639 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-76639?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76639, 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-2026-76639

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