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HIGH · 8.8

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 net...

Vulnerability 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.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
GryphonconnectGryphon Tower Firmware<= 04.0004.12
GryphonconnectGryphon Tower-

Related Weaknesses (CWE)

CWE-78

References

FAQ

What is CVE-2021-20139?

CVE-2021-20139 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 net...

How severe is CVE-2021-20139?

CVE-2021-20139 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20139?

Check the references section above for vendor advisories and patch information. Affected products include: Gryphonconnect Gryphon Tower Firmware, Gryphonconnect Gryphon Tower.