OS Command Injection in TOA Corporation products - CVE-2026-20759
Published: January 16, 2026
Vulnerability identifier: #VU121607
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-20759
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: TOA Corporation
Affected software:
N-C3100-3
N-C3120
N-C3120-3
N-C3200-3
N-C3220-3
N-C3420-3
N-C3420R3
N-C3500
N-C3500A
N-C3700
N-C3700A
N-C3820-3
N-C3100-3
N-C3120
N-C3120-3
N-C3200-3
N-C3220-3
N-C3420-3
N-C3420R3
N-C3500
N-C3500A
N-C3700
N-C3700A
N-C3820-3
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation. A remote user can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2026-20759
Install updates from vendor's website.