What is CVE-2026-27509?
Unitree Go2 firmware versions V1.1.7 through V1.1.9, and V1.1.11 (EDU) do not implement DDS authentication or authorization for the Eclipse CycloneDDS topic rt/api/programming_actuator/request handled by actuator_manager.py. A network-adjacent, unauthenticated attacker can join DDS domain 0 and publish a crafted message (api_id=1002) containing arbitrary Python, which the robot writes to disk under /unitree/etc/programming/ and binds to a physical controller keybinding. When the keybinding is pressed, the code executes as root and the binding persists across reboots.
The record classifies CVE-2026-27509 under weakness class CWE-306. Its CVSS v3 base vector states that the flaw is reachable from an adjacent network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 221 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 8 — HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS v4.0 base score
- 8.5
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - EPSS (FIRST)
- 0.4% probability of exploitation in the next 30 days, higher than 38.7% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 7.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-02-26, last modified 2026-05-26
Is CVE-2026-27509 being exploited?
Weaponised exploit code for CVE-2026-27509 is publicly available. 1 public proof-of-concept repository is tracked for this identifier.
- trickest/cve (trickest)
Affected products and versions
- UnitreeRobotics: Unitree Go2
How to fix CVE-2026-27509
No vendor patch reference has been recorded for CVE-2026-27509 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-27509
1 tracked threat in the Threadlinqs corpus references CVE-2026-27509, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.