Contec Industrial Products: 25 Vulnerabilities Including Command Injection and Auth Bypass Disclosed Together
Contec Co., Ltd. disclosed 25 vulnerabilities on September 14, 2026, affecting industrial control and communication products, including critical command injection and authentication bypass flaws.
Key findings
- 25 vulnerabilities disclosed simultaneously for Contec products on September 14, 2026.
- Multiple OS command injection flaws (CVE-2026-82794, CVE-2026-82791, etc.) allow arbitrary command execution.
- Critical authentication bypass (CVE-2026-82787) and unrestricted file upload (CVE-2026-82793) vulnerabilities pose severe risks.
- Affected products include SolarView Compact, CONPROSYS series, and various industrial communication units.
- Cross-site scripting (XSS) vulnerabilities present across multiple product lines.
On September 14, 2026, Contec Co., Ltd. disclosed a significant batch of 25 vulnerabilities affecting various products including SolarView Compact, CONPROSYS HMI System (CHS), and multiple Contec industrial communication and gateway devices. The vulnerabilities, all disclosed on the same day, span a range of severity levels, with several rated as High and one Critical, posing a substantial risk to users of these industrial control systems.
A prominent theme across many of these vulnerabilities is OS Command Injection. CVE-2026-82794, CVE-2026-82791, CVE-2026-82780, CVE-2026-82779, CVE-2026-82778, and CVE-2026-82774 all detail vulnerabilities where improper neutralization of special elements used in OS commands allows for arbitrary command execution by an attacker who can log in to the product. This class of vulnerability is particularly concerning in industrial environments where command execution can lead to system compromise and operational disruption.
Another significant group of vulnerabilities involves unrestricted file uploads, specifically CVE-2026-82793 and CVE-2026-82780. These flaws allow remote authenticated attackers to upload specially crafted files, potentially leading to arbitrary code execution on the affected devices.
Cross-site scripting (XSS) vulnerabilities are also present in multiple products. CVE-2026-82796, CVE-2026-82795, CVE-2026-82792, CVE-2026-82788, CVE-2026-82781, CVE-2026-82776, CVE-2026-82773, and CVE-2026-82771 describe XSS flaws that could allow attackers to execute arbitrary scripts in the web browsers of logged-in users.
The batch also includes critical security flaws such as CVE-2026-82787, a Missing Authentication for Critical Function vulnerability in CPSL-08P1EN, which could allow unauthenticated remote attackers to operate the product. Additionally, CVE-2026-82784, another missing authentication vulnerability in the Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*, allows attackers to execute REST APIs without authentication, potentially enabling them to retrieve I/O values or control outputs.
Other vulnerabilities disclosed include buffer overflows (CVE-2026-82772, CVE-2026-82770), insufficient protection of credentials (CVE-2026-82786), stack-based buffer overflows leading to DoS (CVE-2026-82785), plaintext storage of passwords (CVE-2026-82783), and information exposure through directory listing (CVE-2026-82778, CVE-2026-82775).
Contec has not provided specific patch information for each individual CVE in the initial disclosure. However, given the breadth of the affected products and the nature of the vulnerabilities, users are strongly advised to consult Contec's official advisories for the latest information on affected versions and available patches or workarounds. The sheer number and severity of these vulnerabilities underscore the importance of diligent security management for industrial control systems.
This coordinated disclosure event highlights critical security weaknesses across a wide range of Contec's product lines. Users of SolarView Compact, CONPROSYS HMI System, and various Contec industrial communication and gateway units should prioritize reviewing their security posture and applying any available updates or mitigations promptly to protect against potential exploitation. The simultaneous release of these CVEs suggests a comprehensive security audit or a significant discovery by a security research team.
The critical nature of several of these vulnerabilities, particularly those allowing command injection and unauthenticated access, demands immediate attention from administrators responsible for these industrial systems. Failure to address these issues could lead to severe operational disruptions, data breaches, or even physical consequences depending on the system's function.
Key findings from this batch of vulnerabilities include the prevalence of OS command injection flaws, the risk of arbitrary code execution through unrestricted file uploads, and critical authentication bypass issues. The wide range of affected products indicates a systemic security concern that requires a thorough review by Contec and its customers.
The disclosure of these 25 vulnerabilities on a single day points to a significant security event for Contec Co., Ltd. and its customers. The vulnerabilities, ranging from medium to critical severity, affect a broad spectrum of industrial and communication devices. The common themes of command injection, file upload vulnerabilities, and authentication bypass necessitate a proactive approach to security patching and system hardening.
The affected products include SolarView Compact, CONPROSYS HMI System (CHS), Contec CAN 2.0B Communication Wireless LAN / USB Converter Unit, CPSL-08P1EN, Remote I/O Coupler Unit (Server Type) CPSN-MCB271-*, CONPROSYS nano Series, CONPROSYS TM Series, CONPROSYS PAC Series, CONPROSYS M2M Gateway Series, CONPROSYS M2M Controller Series, Contec EC1000 series, and Contec RP-WAH-SR Series.
Given the severity of vulnerabilities like CVE-2026-82794 and CVE-2026-82787, which allow for OS command injection and unauthenticated critical function operation respectively, it is imperative for users to seek and apply any available patches or mitigation strategies from Contec immediately. The potential impact of these vulnerabilities ranges from arbitrary script execution in user browsers to full system compromise and control by remote attackers.
This batch of vulnerabilities serves as a stark reminder of the ongoing security challenges in the industrial Internet of Things (IIoT) sector. Organizations relying on Contec products should conduct thorough risk assessments and prioritize the remediation of these flaws to maintain the integrity and security of their operational technology environments. The coordinated disclosure suggests a focused effort to bring these issues to light, emphasizing the need for swift action.