An issue was discovered on PHOENIX CONTACT FL NAT SMCS 8TX, FL NAT SMN 8TX, FL NAT SMN 8TX-M, and FL NAT SMN 8TX-M-DMG devices. There is unauthorized access to the WEB-UI by attackers arriving from the same source IP address as an authenticated user, because this IP address is used as a session identifier.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 8 products from phoenixcontact, from phoenixcontact, from phoenixcontact and 5 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2019-03-26T20:29:00.837
2026-06-17T02:44:16.343
Modified
CVSSv3.0: 8.8 (HIGH)
AV:N/AC:M/Au:N/C:P/I:P/A:P
8.6
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | phoenixcontact | fl_nat_smn_8tx-m-dmg_firmware | - | Yes |
| Hardware | phoenixcontact | fl_nat_smn_8tx-m-dmg | - | No |
| Operating System | phoenixcontact | fl_nat_smn_8tx-m_firmware | - | Yes |
| Hardware | phoenixcontact | fl_nat_smn_8tx-m | - | No |
| Operating System | phoenixcontact | fl_nat_smn_8tx_firmware | - | Yes |
| Hardware | phoenixcontact | fl_nat_smn_8tx | - | No |
| Operating System | phoenixcontact | fl_nat_smcs_8tx_firmware | - | Yes |
| Hardware | phoenixcontact | fl_nat_smcs_8tx | - | 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.