CVE-2026-76639

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Public exploit or proof-of-concept code is available
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 8.8Exploit: Public PoCExposed services: Not assessed

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

The CVE record's CNA (VulnCheck) lists Unitree Robotics G1 EDU versions up to and including 1.5.2 as affected. No release containing a fix is confirmed on record.

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
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

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 (value × EchelonGraph’s weight)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.7%
EPSS %ILE
50th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 27, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Aug 27, 2026
No fix on record yet.
Web page

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
Web page

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
Web page

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 20× in last 7d / 103× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 174 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 74 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  2. 2026-10-13 07:07 UTCEG score recompute
  3. 2026-10-13 07:07 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  4. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  5. 2026-10-12 15:38 UTCEG score recompute
  6. 2026-10-11 19:24 UTCEG score recompute
  7. 2026-10-11 16:39 UTCEG score recompute
  8. 2026-10-11 13:58 UTCEG score recompute
  9. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  11. 2026-10-10 15:12 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  12. 2026-10-10 01:52 UTCEG score recompute
  13. 2026-10-10 01:52 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  14. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  15. 2026-10-09 03:02 UTCEG score recompute
  16. 2026-10-09 03:02 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  17. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  18. 2026-10-08 01:18 UTCEG score recompute
  19. 2026-10-08 01:18 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  20. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  21. 2026-10-07 09:26 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  22. 2026-10-06 20:41 UTCEG score recompute
  23. 2026-10-06 20:41 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  24. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  25. 2026-10-06 07:32 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
Show 75 more
  1. 2026-10-05 18:10 UTCEG score recompute
  2. 2026-10-05 18:10 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  3. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  4. 2026-10-05 05:27 UTCEG score recompute
  5. 2026-10-05 05:27 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  6. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  7. 2026-10-04 16:44 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  8. 2026-10-04 04:01 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  9. 2026-10-03 15:13 UTCEG score recompute
  10. 2026-10-03 15:13 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  11. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  12. 2026-10-02 22:59 UTCEG score recompute
  13. 2026-10-02 22:59 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  14. 2026-10-02 10:05 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  15. 2026-10-01 21:22 UTCEG score recompute
  16. 2026-10-01 21:22 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  18. 2026-10-01 08:37 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-09-30 19:54 UTCEG score recompute
  20. 2026-09-30 19:54 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  21. 2026-09-30 04:58 UTCEG score recompute
  22. 2026-09-30 04:58 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  23. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  24. 2026-09-29 12:15 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  25. 2026-09-28 21:44 UTCEG score recompute
  26. 2026-09-28 21:44 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  27. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  28. 2026-09-28 09:01 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  29. 2026-09-27 20:18 UTCEG score recompute
  30. 2026-09-27 20:18 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  31. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  32. 2026-09-27 07:35 UTCEG score recompute
  33. 2026-09-27 07:35 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  34. 2026-09-26 18:41 UTCEG score recompute
  35. 2026-09-26 18:41 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  36. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  37. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  38. 2026-09-25 12:12 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  39. 2026-09-24 23:29 UTCEG score recompute
  40. 2026-09-24 23:29 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  41. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  42. 2026-09-24 09:48 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  43. 2026-09-23 21:05 UTCEG score recompute
  44. 2026-09-23 21:05 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  45. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  46. 2026-09-23 08:22 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  47. 2026-09-22 19:39 UTCEG score recompute
  48. 2026-09-22 19:39 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  49. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  50. 2026-09-22 06:53 UTCEG score recompute
  51. 2026-09-22 06:53 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  52. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  53. 2026-09-21 18:10 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  54. 2026-09-21 05:27 UTCEG score recompute
  55. 2026-09-21 05:27 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  56. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  57. 2026-09-20 15:42 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  58. 2026-09-20 02:59 UTCEG score recompute
  59. 2026-09-20 02:59 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  60. 2026-09-19 14:15 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  61. 2026-09-19 01:32 UTCEG score recompute
  62. 2026-09-19 01:32 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  63. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.7% · 52nd percentile
  64. 2026-09-18 12:45 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  65. 2026-09-18 00:02 UTCEG score recompute
  66. 2026-09-18 00:02 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  67. 2026-09-17 10:51 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  68. 2026-09-16 21:58 UTCEG score recompute
  69. 2026-09-16 21:58 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  70. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  71. 2026-09-16 09:15 UTCEG score recompute
  72. 2026-09-16 09:15 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  73. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  74. 2026-09-15 20:16 UTCGHSA enrichmentGHSA-q24f-vr89-8h97 · GitHub severity HIGH · GitHub CVSS 8.8
  75. 2026-09-15 07:33 UTCEG score recompute

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 GitHub PoC). No fix is confirmed yet, so defenders should restrict or isolate affected systems accordingly until one is published.

  • GitHub PoCOlivierLaflamme/UniBLEed
    Published 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-severity vulnerability; its CVE record was 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 made public?
CVE-2026-76639 was made public on August 27, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 27, 2026. EchelonGraph's copy of the record carries a last-modified date of September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-76639 actively exploited?
CVE-2026-76639 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (50th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-76639?
CVE-2026-76639 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-76639?
No fix for CVE-2026-76639 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (VulnCheck) lists Unitree Robotics G1 EDU versions up to and including 1.5.2 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-76639 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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