OS Command Injection in TOA Corporation products - CVE-2026-20759

Vulnerability identifier: #VU121607

CSH Severity: Medium

CVSS v4: 8.7 [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]

CVE-ID: CVE-2026-20759

CWE-ID: CWE-78

Exploitation vector: Remote access

Exploit availability: No public exploit available

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.

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

Install updates from vendor's website.

N-C3100-3 - update to 1.3.1
N-C3120 - update to 1.3.1
N-C3120-3 - update to 1.3.1
N-C3200-3 - update to 1.3.1
N-C3220-3 - update to 1.3.1
N-C3420-3 - update to 1.3.1
N-C3420R3 - update to 1.3.1
N-C3500 - update to 1.3.1
N-C3500A - update to 1.3.1
N-C3700 - update to 1.3.1
N-C3700A - update to 1.3.1
N-C3820-3 - update to 1.3.1

• https://jvn.jp/en/jp/JVN08087148/index.html
• https://www.toa-products.com/securityinfo/pdf/tv2025-001jp.pdf

• Multiple vulnerabilities in TOA Network Cameras TRIFORA 3 series