Back to Database
Status published
High
CVE-2022-3480
Denial-of-Service vulnerability in PHOENIX CONTACT mGuard product family
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2022-3480
Credits & Attribution
No credits recorded in the NVD database.
More from PHOENIX CONTACT
View All →CVE-2025-41668
Phoenix Contact: File access due to the replacement of a critical file used by the service security-profile
High
8.8
CVE-2025-41667
Phoenix Contact: File access due to the replacement of a critical file used by the arp-preinit script
High
8.8
CVE-2025-41666
Phoenix Contact: File access due to the replacement of a critical file used by the watchdog
High
8.8
CVE-2025-41665
Phoenix Contact: DoS of the PLC due to incorrect default permissions possible
Medium
6.5
CVE-2024-7734
Phoenix Contact: Multiple mGuard devices are vulnerable to a drain of open file descriptors.
Medium
5.3
Affected Vendor
PHOENIX CONTACT
View all reports →Affected Software
FL MGUARD CENTERPORT, FL MGUARD CENTERPORT VPN-1000, FL MGUARD CORE TX, FL MGUARD CORE TX VPN, FL MGUARD DELTA TX/TX, FL MGUARD DELTA TX/TX VPN, FL MGUARD GT/GT, FL MGUARD GT/GT VPN, FL MGUARD PCI4000, FL MGUARD PCI4000 VPN, FL MGUARD PCIE4000, FL MGUARD PCIE4000 VPN, FL MGUARD RS2000 TX/TX-B, FL MGUARD RS2000 TX/TX VPN, FL MGUARD RS2005 TX VPN, FL MGUARD RS4000 TX/TX, FL MGUARD RS4000 TX/TX-M, FL MGUARD RS4000 TX/TX-P, FL MGUARD RS4000 TX/TX VPN, FL MGUARD RS4004 TX/DTX, FL MGUARD RS4004 TX/DTX VPN, FL MGUARD SMART2, FL MGUARD SMART2 VPN, TC MGUARD RS2000 3G VPN, TC MGUARD RS2000 4G ATT VPN, TC MGUARD RS2000 4G VPN, TC MGUARD RS2000 4G VZW VPN, TC MGUARD RS4000 3G VPN, TC MGUARD RS4000 4G ATT VPN, TC MGUARD RS4000 4G VPN, TC MGUARD RS4000 4G VZW VPN
Vulnerable Versions:
0
Timeline
Official Publish:
November 15th, 2022
Last Modified:
April 29th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H