CVE-2021-20139
CVSS v3
8.8
HIGH
EPSS Score
7.8 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An unauthenticated command injection vulnerability exists in the parameters of operation 3 in the controller_server service on Gryphon Tower routers. An unauthenticated remote attacker on the same network can execute commands as root on the device by sending a specially crafted malicious packet to the controller_server service on port 9999.
Technical details
- Published
- 2021-12-09
Frequently asked questions
What is CVE-2021-20139?
An unauthenticated command injection vulnerability exists in the parameters of operation 3 in the controller_server service on Gryphon Tower routers. An unauthenticated remote attacker on the same network can execute commands as root on the device by sending a specially crafted malicious packet to the controller_server service on port 9999.
Is CVE-2021-20139 actively exploited?
Active exploitation of CVE-2021-20139 has not been confirmed. The EPSS score is 7.8%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-20139?
CVE-2021-20139 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2021-20139 affecting your environment?
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