CVE-2026-76640

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-27. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: 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 multiple chained vulnerabilities in the BLE GATT server and WiFi provisioning stack that allow unauthenticated proximate attackers to achieve root code execution without pairing or credentials by exploiting an unquoted heredoc variable in the WiFi provisioning script and a buffer overflow in the SSID chunk accumulator. Attackers can send crafted BLE writes to overflow a fixed BSS buffer across BLE connections, corrupting an adjacent mainloop function pointer dispatch entry that is subsequently invoked by the cleanup path passing attacker-controlled data to system() as uid 0.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
50(Track*)
EG Risk 50/100SSVC: 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
Severity75% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

August 27, 2026

Last Modified

August 28, 2026

Advisory Details (3)

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

Unitree G1 EDU 1.5.2 BLE GATT RCE via WiFi Provisioning Stack | Advisories | VulnCheck

https://www.vulncheck.com/advisories/unitree-g1-edu-ble-gatt-rce-via-wifi-provisioning-stack
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-2026-76640(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 14× in last 7d / 14× 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. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 21:42 UTCGHSA enrichment
  3. 2026-08-29 09:14 UTCEG score recompute
  4. 2026-08-29 09:13 UTCGHSA enrichment
  5. 2026-08-28 21:42 UTCEPSS rescore
  6. 2026-08-28 20:43 UTCEG score recompute
  7. 2026-08-28 20:43 UTCGHSA enrichment
  8. 2026-08-28 19:47 UTCEG score recompute
  9. 2026-08-28 19:46 UTCGHSA enrichment
  10. 2026-08-28 09:00 UTCEG score recompute
  11. 2026-08-28 08:59 UTCGHSA enrichment
  12. 2026-08-27 20:27 UTCEG score recompute
  13. 2026-08-27 20:16 UTCEG score recompute
  14. 2026-08-27 20:13 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-76640?
CVE-2026-76640 is a high vulnerability published on August 27, 2026. Unitree G1 EDU firmware through 1.5.2 contains multiple chained vulnerabilities in the BLE GATT server and WiFi provisioning stack that allow unauthenticated proximate attackers to achieve root code execution without pairing or credentials by exploiting an unquoted heredoc variable in the WiFi…
When was CVE-2026-76640 disclosed?
CVE-2026-76640 was first published in the National Vulnerability Database on August 27, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76640 actively exploited?
CVE-2026-76640 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 72.7% of all scored CVEs.
What is the CVSS score of CVE-2026-76640?
CVE-2026-76640 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-76640?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-76640, 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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