In Phoenix Contact FL MGUARD 1102 and 1105 in Versions 1.4.0, 1.4.1 and 1.5.0 a user with high privileges can inject HTML code (XSS) through web-based management or the REST API with a manipulated certificate file.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.8, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 4 products from phoenixcontact, from phoenixcontact, from phoenixcontact and 1 other, organizations running these solutions should prioritize assessment and patching.
Reported in 2021, 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.
2021-11-10T12:15:15.227
2026-06-17T03:56:10.350
Modified
CVSSv3.1: 4.8 (MEDIUM)
AV:N/AC:M/Au:S/C:N/I:P/A:N
6.8
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | phoenixcontact | fl_mguard_1102_firmware | 1.4.0 | Yes |
| Operating System | phoenixcontact | fl_mguard_1102_firmware | 1.4.1 | Yes |
| Operating System | phoenixcontact | fl_mguard_1102_firmware | 1.5.0 | Yes |
| Hardware | phoenixcontact | fl_mguard_1102 | - | No |
| Operating System | phoenixcontact | fl_mguard_1105_firmware | 1.4.0 | Yes |
| Operating System | phoenixcontact | fl_mguard_1105_firmware | 1.4.1 | Yes |
| Operating System | phoenixcontact | fl_mguard_1105_firmware | 1.5.0 | Yes |
| Hardware | phoenixcontact | fl_mguard_1105 | - | 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 phoenixcontact'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.