CVE-2021-47664
Enumeration of valid user names
Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Enumeration of valid user names
Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.
- Record
CVE-2021-47664- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-203
- Updated
- 2026-11-02
EUVDEUVD-2025-12117
Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.
- Record
EUVD-2025-12117- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-547h-g7h3-f28q
Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid...
Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.
- Record
GHSA-547h-g7h3-f28q- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-203
- Updated
- 2026-11-02
NVD
Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.
- Record
CVE-2021-47664- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-203
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-47664 is a medium vulnerability (CVSS 5.3) in Franka Robotics Emika Robot, published April 24, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 36th percentile. No source names a fixed version.