Medium severity5.4NVD Advisory· Published Dec 17, 2020· Updated Jun 17, 2026
CVE-2020-12523
CVE-2020-12523
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
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
19cpe:2.3:o:phoenixcontact:fl_mguard_rs4004_tx\/dtx_firmware:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:phoenixcontact:fl_mguard_rs4004_tx\/dtx_firmware:*:*:*:*:*:*:*:*range: <8.8.3
- (no CPE)range: unspecified
cpe:2.3:o:phoenixcontact:fl_mguard_rs4004_tx\/dtx_vpn_firmware:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:phoenixcontact:fl_mguard_rs4004_tx\/dtx_vpn_firmware:*:*:*:*:*:*:*:*range: <8.8.3
- (no CPE)range: unspecified
- cpe:2.3:o:phoenixcontact:innominate_mguard_rs4000_4tx\/3g\/tx_vpn_firmware:*:*:*:*:*:*:*:*Range: <8.8.3
- cpe:2.3:o:phoenixcontact:innominate_mguard_rs4000_4tx\/tx_firmware:*:*:*:*:*:*:*:*Range: <8.8.3
- cpe:2.3:o:phoenixcontact:innominate_mguard_rs4000_4tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*Range: <8.8.3
cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_3g_vpn_firmware:-:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_3g_vpn_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_4g_att_vpn_firmware:*:*:*:*:*:*:*:*range: <8.8.3
- (no CPE)range: unspecified
- (no CPE)range: unspecified
cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_4g_vpn_firmware:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_4g_vpn_firmware:*:*:*:*:*:*:*:*range: <8.8.3
- (no CPE)range: unspecified
cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_4g_vzw_vpn_firmware:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_4g_vzw_vpn_firmware:*:*:*:*:*:*:*:*range: <8.8.3
- (no CPE)range: unspecified
- Range: <8.8.3
- Innominate/Innominate mGuard rs4000 4TX/3G/TX VPNv5Range: unspecified
- Innominate/Innominate mGuard rs4000 4TX/TXv5Range: unspecified
- Innominate/Innominate mGuard rs4000 4TX/TX VPNv5Range: unspecified
Patches
Vulnerability mechanics
References
1- cert.vde.com/en-us/advisories/vde-2020-046nvdThird Party Advisory
News mentions
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