Account impersonation via reusable JWT session tokens
Published Apr 24, 2025 · Updated Apr 24, 2025
Improper session handling in Franka Emika Robot 4.0.3 and earlier allows remote attackers to impersonate Desk users via guessed JWT session IDs. The Desk web application continues to accept its JWT session token after the associated user logs out or the robot reboots, leaving the token reusable instead of invalidating it. No authentication or user interaction is required; a valid guessed token grants the victim's Desk access, including that account's robot-control privileges.
Summary
What happened
Improper session handling in Franka Emika Robot 4.0.3 and earlier allows remote attackers to impersonate Desk users via guessed JWT session IDs. The Desk web application continues to accept its JWT session token after the associated user logs out or the robot reboots, leaving the token reusable instead of invalidating it. No authentication or user interaction is required; a valid guessed token grants the victim's Desk access, including that account's robot-control privileges.
The record
- CVE
- CVE-2021-47663
- Published
- Apr 24, 2025
- Updated
- Apr 24, 2025
- Vendor
- Franka Robotics
- Product
- Franka Emika Robot
- Classifications
- CWE-613, T1550.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 24, 2025CVE publishedPublication date reported by the CVE source.
- Apr 24, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.0.0 <=4.0.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo