Vulnerability Description
LeRobot through 0.5.1 contains an unsafe deserialization vulnerability in the async inference pipeline where pickle.loads() is used to deserialize data received over unauthenticated gRPC channels without TLS in the policy server and robot client components. An unauthenticated network-reachable attacker can achieve arbitrary code execution on the server or client by sending a crafted pickle payload through the SendPolicyInstructions, SendObservations, or GetActions gRPC calls.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Huggingface | Lerobot | <= 0.5.1 |
Related Weaknesses (CWE)
References
- https://chocapikk.com/posts/2026/lerobot-pickle-rce/ExploitMitigationThird Party Advisory
- https://github.com/huggingface/lerobot/issues/3047ExploitIssue TrackingThird Party Advisory
- https://github.com/huggingface/lerobot/issues/3134Issue Tracking
- https://github.com/huggingface/lerobot/pull/3048Issue TrackingPatch
- https://www.vulncheck.com/advisories/lerobot-unsafe-deserialization-remote-code-Third Party AdvisoryExploit
FAQ
What is CVE-2026-25874?
CVE-2026-25874 is a vulnerability with a CVSS score of 9.8 (CRITICAL). LeRobot through 0.5.1 contains an unsafe deserialization vulnerability in the async inference pipeline where pickle.loads() is used to deserialize data received over unauthenticated gRPC channels with...
How severe is CVE-2026-25874?
CVE-2026-25874 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-25874?
Check the references section above for vendor advisories and patch information. Affected products include: Huggingface Lerobot.