{"id":"CVE-2019-13939","aliases":["EUVD-2019-5206","GHSA-jpvr-c9fc-2r4h"],"status":"published","title":"A vulnerability has been identified in Nucleus NET (All versions), Nucleus RTOS (All versions),...","description":"A vulnerability has been identified in APOGEE MEC/MBC/PXC (P2) (All versions \u003c V2.8.2), APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions \u003e= V2.8.2 \u003c V2.8.19), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions \u003e= V2.8.2 \u003c V2.8.19), Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions \u003c V2303), Desigo PXC00-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC00-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXC001-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC100-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC12-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC128-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXC200-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC22-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC22.1-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC36.1-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC50-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC64-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXM20-E (All versions \u003e= V2.3 \u003c V6.0.327), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions \u003c V2017.02.3), Nucleus Source Code (All versions), SIMOTICS CONNECT 400 (All versions \u003c V0.3.0.330), TALON TC Compact (BACnet) (All versions \u003c V3.5.3), TALON TC Modular (BACnet) (All versions \u003c V3.5.3). By sending specially crafted DHCP packets to a device where the DHCP client is enabled, an attacker could change the IP address of the device to an invalid value.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00715,"percentile":0.54016,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-01-16T15:35:24Z","modified":"2026-06-17T02:17:27Z","products":[{"vendor":"siemens","product":"apogee mec/mbc/pxc (p2)"},{"vendor":"siemens","product":"apogee pxc compact (bacnet)"},{"vendor":"siemens","product":"apogee pxc compact (p2 ethernet)"},{"vendor":"siemens","product":"apogee pxc modular (bacnet)"},{"vendor":"siemens","product":"apogee pxc modular (p2 ethernet)"},{"vendor":"siemens","product":"apogee_modular_building_controller_firmware"},{"vendor":"siemens","product":"apogee_modular_equiment_controller_firmware"},{"vendor":"siemens","product":"apogee_pxc_firmware"},{"vendor":"siemens","product":"capital embedded ar classic 431-422"},{"vendor":"siemens","product":"capital embedded ar classic r20-11"},{"vendor":"siemens","product":"capital_vstar"},{"vendor":"siemens","product":"desigo pxc00-e.d"},{"vendor":"siemens","product":"desigo pxc00-u"},{"vendor":"siemens","product":"desigo pxc001-e.d"},{"vendor":"siemens","product":"desigo pxc100-e.d"},{"vendor":"siemens","product":"desigo pxc12-e.d"},{"vendor":"siemens","product":"desigo pxc128-u"},{"vendor":"siemens","product":"desigo pxc200-e.d"},{"vendor":"siemens","product":"desigo pxc22-e.d"},{"vendor":"siemens","product":"desigo pxc22.1-e.d"},{"vendor":"siemens","product":"desigo pxc36.1-e.d"},{"vendor":"siemens","product":"desigo pxc50-e.d"},{"vendor":"siemens","product":"desigo pxc64-u"},{"vendor":"siemens","product":"desigo pxm20-e"},{"vendor":"siemens","product":"desigo_pxc00-e.d_firmware"},{"vendor":"siemens","product":"desigo_pxc00-u_firmware"},{"vendor":"siemens","product":"desigo_pxc001-e.d_firmware"},{"vendor":"siemens","product":"desigo_pxc12-e.d_firmware"},{"vendor":"siemens","product":"desigo_pxc22-e.d_firmware"},{"vendor":"siemens","product":"desigo_pxc22.1-e.d_firmware"},{"vendor":"siemens","product":"desigo_pxc36.1-e.d_firmware"},{"vendor":"siemens","product":"desigo_pxc_firmware"},{"vendor":"siemens","product":"desigo_pxm20_firmware"},{"vendor":"siemens","product":"desigopxc100-e.d_firmware"},{"vendor":"siemens","product":"desigopxc128-u_firmware"},{"vendor":"siemens","product":"desigopxc200-e.d_firmware"},{"vendor":"siemens","product":"desigopxc50-e.d_firmware"},{"vendor":"siemens","product":"desigopxc64-u_firmware"},{"vendor":"siemens","product":"desigopxm20-e_firmware"},{"vendor":"siemens","product":"nucleus net"},{"vendor":"siemens","product":"nucleus readystart v3"},{"vendor":"siemens","product":"nucleus source code"},{"vendor":"siemens","product":"nucleus_net"},{"vendor":"siemens","product":"nucleus_readystart"},{"vendor":"siemens","product":"nucleus_rtos"},{"vendor":"siemens","product":"nucleus_safetycert"},{"vendor":"siemens","product":"nucleus_source_code"},{"vendor":"siemens","product":"simotics connect 400"},{"vendor":"siemens","product":"simotics_connect_400_firmware"},{"vendor":"siemens","product":"talon tc compact (bacnet)"},{"vendor":"siemens","product":"talon tc modular (bacnet)"},{"vendor":"siemens","product":"talon_tc_firmware"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-434032.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-162506.pdf","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-20-105-06","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-434032.html","tags":["x_transferred"]},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-162506.html","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-13939"},{"url":"https://www.us-cert.gov/ics/advisories/icsa-20-105-06"},{"url":"https://github.com/advisories/GHSA-jpvr-c9fc-2r4h"}],"sources":{"cve":[{"id":"CVE-2019-13939","description":"A vulnerability has been identified in APOGEE MEC/MBC/PXC (P2) (All versions \u003c V2.8.2), APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions \u003e= V2.8.2 \u003c V2.8.19), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions \u003e= V2.8.2 \u003c V2.8.19), Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions \u003c V2303), Desigo PXC00-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC00-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXC001-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC100-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC12-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC128-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXC200-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC22-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC22.1-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC36.1-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC50-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC64-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXM20-E (All versions \u003e= V2.3 \u003c V6.0.327), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions \u003c V2017.02.3), Nucleus Source Code (All versions), SIMOTICS CONNECT 400 (All versions \u003c V0.3.0.330), TALON TC Compact (BACnet) (All versions \u003c V3.5.3), TALON TC Modular (BACnet) (All versions \u003c V3.5.3). By sending specially crafted DHCP packets to a device where the DHCP client is enabled, an attacker could change the IP address of the device to an invalid value.","status":"published","published":"2020-01-16T15:35:24Z","modified":"2025-06-10T15:17:09.328Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:20:24.025419Z"}],"euvd":[{"id":"EUVD-2019-5206","description":"A vulnerability has been identified in APOGEE MEC/MBC/PXC (P2) (All versions \u003c V2.8.2), APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions \u003e= V2.8.2 \u003c V2.8.19), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions \u003e= V2.8.2 \u003c V2.8.19), Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions \u003c V2303), Desigo PXC00-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC00-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXC001-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC100-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC12-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC128-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXC200-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC22-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC22.1-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC36.1-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC50-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC64-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXM20-E (All versions \u003e= V2.3 \u003c V6.0.327), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions \u003c V2017.02.3), Nucleus Source Code (All versions), SIMOTICS CONNECT 400 (All versions \u003c V0.3.0.330), TALON TC Compact (BACnet) (All versions \u003c V3.5.3), TALON TC Modular (BACnet) (All versions \u003c V3.5.3). By sending specially crafted DHCP packets to a device where the DHCP client is enabled, an attacker could change the IP address of the device to an invalid value.","status":"published","published":"2020-01-16T15:35:24Z","modified":"2025-06-10T15:17:09Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T20:32:26.841647Z"}],"ghsa":[{"id":"GHSA-jpvr-c9fc-2r4h","title":"A vulnerability has been identified in Nucleus NET (All versions), Nucleus RTOS (All versions),...","description":"A vulnerability has been identified in Nucleus NET (All versions), Nucleus RTOS (All versions), Nucleus ReadyStart for ARM, MIPS, and PPC (All versions \u003c V2017.02.2 with patch \"Nucleus 2017.02.02 Nucleus NET Patch\"), Nucleus SafetyCert (All versions), Nucleus Source Code (All versions), VSTAR (All versions). By sending specially crafted DHCP packets to a device, an attacker may be able to affect availability and integrity of the device. Adjacent network access, but no authentication and no user interaction is needed to conduct this attack. At the time of advisory publication no public exploitation of this security vulnerability was known.","status":"published","published":"2022-05-24T17:06:47Z","modified":"2026-03-24T05:03:45Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:06:48.910736Z"}],"nvd":[{"id":"CVE-2019-13939","description":"A vulnerability has been identified in APOGEE MEC/MBC/PXC (P2) (All versions \u003c V2.8.2), APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions \u003e= V2.8.2 \u003c V2.8.19), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions \u003e= V2.8.2 \u003c V2.8.19), Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions \u003c V2303), Desigo PXC00-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC00-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXC001-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC100-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC12-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC128-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXC200-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC22-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC22.1-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC36.1-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC50-E.D (All versions \u003e= V2.3 \u003c V6.0.327), Desigo PXC64-U (All versions \u003e= V2.3x and \u003c V6.00.327), Desigo PXM20-E (All versions \u003e= V2.3 \u003c V6.0.327), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions \u003c V2017.02.3), Nucleus Source Code (All versions), SIMOTICS CONNECT 400 (All versions \u003c V0.3.0.330), TALON TC Compact (BACnet) (All versions \u003c V3.5.3), TALON TC Modular (BACnet) (All versions \u003c V3.5.3). By sending specially crafted DHCP packets to a device where the DHCP client is enabled, an attacker could change the IP address of the device to an invalid value.","status":"published","published":"2020-01-16T16:15:16.277Z","modified":"2026-06-17T02:17:27.107Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":4.8,"vector":"AV:A/AC:L/Au:N/C:N/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:05:42.416368Z"}]}}