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

Q: How do I fix CVE-2026-27509?

go2 firmware: upgrade to newer than 1.1.9; go2 edu firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2026-27509 being exploited?

CVE-2026-27509 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-27509 affect?

CVE-2026-27509 affects go2 firmware, go2 edu firmware. Severity is high (CVSS 8.0). 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-adjac

Q: How urgent is CVE-2026-27509?

Priority 46/100. High severity; Public exploit reference

This month

HIGH 8.0UPGRADEMITIGATE

CVE-2026-27509 is a high-severity flaw (CVSS 8.0) affecting go2 firmware, go2 edu firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 physica

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.0 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 49%)
CISA exploited list	No
Weakness	CWE-306
Published	2026-02-26
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: unitree

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-26 20:31 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

unitree go2 firmware UPGRADE

Affected: >= 1.1.7 and <= 1.1.9

Fixed in: newer than 1.1.9

Safe to downgrade to: a release before 1.1.7

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

unitree go2 edu firmware MITIGATE

Affected: 1.1.11

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.11

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27509?

go2 firmware: upgrade to newer than 1.1.9; go2 edu firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-27509 being exploited?

CVE-2026-27509 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27509 affect?

CVE-2026-27509 affects go2 firmware, go2 edu firmware. Severity is high (CVSS 8.0). 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-adjac

How urgent is CVE-2026-27509?

Priority 46/100. High severity; Public exploit reference

Software pages

Python vulnerabilities

Related CVEs

CVE-2025-35027 HIGH 7.3 UPGRADE UPGRADE Multiple robotic products by Unitree sharing a common firmware, including the Go2, G1, H1, and B2 devices, con
CVE-2026-27510 CRITICAL 9.6 UPGRADE Unitree Go2 firmware versions 1.1.7 through 1.1.11, when used with the Unitree Go2 Android application (com.un

References

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