Path traversal in TOA Corporation products - CVE-2026-22876

Vulnerability identifier: #VU121611

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2026-22876

CWE-ID: CWE-22

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

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.

Install updates from vendor's website.

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