PatchTheCVECVE-2021-20146: An unprotected ssh private key exists on the Gryphon devices which could be used to achieve root access to a s
CVE-2021-20146 is a critical-severity flaw (CVSS 9.8) affecting gryphon tower firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An unprotected ssh private key exists on the Gryphon devices which could be used to achieve root access to a server affiliated with Gryphon's development and infrastructure. At the time of discovery, the ssh key could be used to login to the development server hosted in Amazon Web Services.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.1% (top 19%) |
| CISA exploited list | No |
| Weakness | CWE-522 |
| Published | 2021-12-09 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2021-20146?
gryphon tower firmware: upgrade to newer than 04.0004.12. Exact commands for each OS are on this page.
Is CVE-2021-20146 being exploited?
CVE-2021-20146 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-2021-20146 affect?
CVE-2021-20146 affects gryphon tower firmware. Severity is critical (CVSS 9.8). An unprotected ssh private key exists on the Gryphon devices which could be used to achieve root access to a server affiliated with Gryphon's development and infrastructure. At the time of discovery, the ssh key could be used to login to th
How urgent is CVE-2021-20146?
Priority 60/100. Critical severity; Remotely exploitable, no login, no user action
Software pages
Related CVEs
- CVE-2021-20145 HIGH 7.5 UPGRADE Gryphon Tower routers contain an unprotected openvpn configuration file which can grant attackers access to th
- CVE-2021-20144 HIGH 8.8 UPGRADE An unauthenticated command injection vulnerability exists in the parameters of operation 49 in the controller_
- CVE-2021-20143 HIGH 8.8 UPGRADE An unauthenticated command injection vulnerability exists in the parameters of operation 48 in the controller_
- CVE-2021-20142 HIGH 8.8 UPGRADE An unauthenticated command injection vulnerability exists in the parameters of operation 41 in the controller_
- CVE-2021-20141 HIGH 8.8 UPGRADE An unauthenticated command injection vulnerability exists in the parameters of operation 32 in the controller_