CVE Tools
Sign in

CVE-2020-12523

Phoenix Contact mGuard Devices versions before 8.8.3: LAN ports get functional after reboot even if they are disabled in the device configuration

Published: Dec 17, 2020Updated: Nov 21, 2024 Sources: CVE List NVDCWE-909
NVD MITRE
5.4CVSSMEDIUM
EPSS Score
0.9%
Top 45.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

On Phoenix Contact mGuard Devices versions before 8.8.3 LAN ports get functional after reboot even if they are disabled in the device configuration. For mGuard devices with integrated switch on the LAN side, single switch ports can be disabled by device configuration. After a reboot these ports get functional independent from their configuration setting: Missing Initialization of Resource

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:LI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-909

Affected Products

tc mguard rs4000 4g vzw vpn firmwarephoenixcontactICS / OT / IoT
tc mguard rs4000 4g att vpn firmwarephoenixcontactICS / OT / IoT
fl mguard rs4004 tx\/dtx firmwarephoenixcontactICS / OT / IoT
fl mguard rs4004 tx\/dtx vpn firmwarephoenixcontactICS / OT / IoT
tc mguard rs4000 3g vpn firmwarephoenixcontactICS / OT / IoT
phoenixcontactcommercialDEICS / OT / IoT
and 13 more affected products View all →

Exploitability

Official Patch Available
Workaround Available

References

https://cert.vde.com/en-us/advisories/vde-2020-046
cert.vde.com

Timeline

Published
Dec 17, 2020
Last Updated
Nov 21, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2020-12523 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows