CVE-2021-47663— Improper session handling
Quick assessment
Affected
Franka Robotics Franka Emika Robot
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Franka Emika Robot是德国Franka公司的一款机器人。 Franka Emika Robot存在代码问题漏洞，该漏洞源于JSON Web Tokens实现不当，未经验证的远程攻击者可猜测有效会话ID并冒充用户获取完全访问权限。
Possible ATT&CK Techniques 1 AI
T1078 · Valid Accounts
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I. Basic Information for CVE-2021-47663
Vulnerability Information
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Vulnerability Title
Improper session handling
Source: CVE Program / CVE List V5
Vulnerability Description
Due to improper JSON Web Tokens implementation an unauthenticated remote attacker can guess a valid session ID and therefore impersonate a user to gain full access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
Franka Emika Robot 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Franka Emika Robot是德国Franka公司的一款机器人。 Franka Emika Robot存在代码问题漏洞，该漏洞源于JSON Web Tokens实现不当，未经验证的远程攻击者可猜测有效会话ID并冒充用户获取完全访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Franka Robotics | Franka Emika Robot | 0.0.0 ~ 4.0.3 | - |
|
II. Public POCs for CVE-2021-47663
| # | POC Description | Source Link | Shenlong Link |
|---|
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News Coverage for CVE-2021-47663 (1)
Same Patch Batch · Franka Robotics · 2025-04-24 · 3 CVEs total
| CVE-2021-47662 | 7.5 HIGH | Unauthenticated remote shutdown of the cobot |
| CVE-2021-47664 | 5.3 MEDIUM | Enumeration of valid user names |
IV. Related Vulnerabilities
Same weakness: CWE-613
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CVE-2026-77130
Insufficient Session Expiration in extension "SYSSY - TYPO3
V. Comments for CVE-2021-47663
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