Description
A remote, unauthenticated attacker could cause a denial-of-service of PHOENIX CONTACT FL MGUARD and TC MGUARD devices below version 8.9.0 by sending a larger number of unauthenticated HTTPS connections originating from different source IP’s. Configuring firewall limits for incoming connections cannot prevent the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| PHOENIX CONTACT | FL MGUARD CENTERPORT | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD CENTERPORT VPN-1000 | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD CORE TX | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD CORE TX VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD DELTA TX/TX | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD DELTA TX/TX VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD GT/GT | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD GT/GT VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD PCI4000 | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD PCI4000 VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD PCIE4000 | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD PCIE4000 VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD RS2000 TX/TX-B | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD RS2000 TX/TX VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD RS2005 TX VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD RS4000 TX/TX | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD RS4000 TX/TX-M | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD RS4000 TX/TX-P | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD RS4000 TX/TX VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD RS4004 TX/DTX | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD RS4004 TX/DTX VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD SMART2 | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | FL MGUARD SMART2 VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | TC MGUARD RS2000 3G VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | TC MGUARD RS2000 4G ATT VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | TC MGUARD RS2000 4G VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | TC MGUARD RS2000 4G VZW VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | TC MGUARD RS4000 3G VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | TC MGUARD RS4000 4G ATT VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | TC MGUARD RS4000 4G VPN | < 8.9.0 | 8.9.0 |
| PHOENIX CONTACT | TC MGUARD RS4000 4G VZW VPN | < 8.9.0 | 8.9.0 |
Advisories 1
- VDE-2022-051 PHOENIX CONTACT: Denial-of-Service vulnerability in mGuard product family CERT@VDE · May 22, 2025