A post-authentication command injection vulnerability in the "DNSServer” parameter of the diagnostic function in the Zyxel VMG8825-T50K firmware version V5.50(ABOM.8.5)C0 and earlier could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on a vulnerable device.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.2, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 12 products from zyxel, from zyxel, from zyxel and 9 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2025, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2025-03-11T02:15:10.043
2026-01-13T16:11:20.030
Analyzed
CVSSv3.1: 7.2 (HIGH)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | zyxel | emg5723-t50k_firmware | ≤ 5.50\(abom.8.5\)c0 | Yes |
| Hardware | zyxel | emg5723-t50k | - | No |
| Operating System | zyxel | dm4200-b0_firmware | ≤ 5.17\(acbs.1\)c0 | Yes |
| Hardware | zyxel | dm4200-b0 | - | No |
| Operating System | zyxel | vmg3927-t50k_firmware | ≤ 5.50\(abom.8.5\)c0 | Yes |
| Hardware | zyxel | vmg3927-t50k | - | No |
| Operating System | zyxel | vmg4005-b50a_firmware | ≤ 5.15\(abqa.2.3\)c0 | Yes |
| Hardware | zyxel | vmg4005-b50a | - | No |
| Operating System | zyxel | vmg4005-b60a_firmware | ≤ 5.15\(abqa.2.3\)c0 | Yes |
| Hardware | zyxel | vmg4005-b60a | - | No |
| Operating System | zyxel | vmg8825-t50k_firmware | ≤ 5.50\(abom.8.5\)c0 | Yes |
| Hardware | zyxel | vmg8825-t50k | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For zyxel's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.