CVE-2020-28388 (GCVE-0-2020-28388)

Vulnerability from cvelistv5 – Published: 2021-02-09 00:00 – Updated: 2026-06-02 20:14
VLAI
Summary
A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions < V5.2), Nucleus ReadyStart V3 (All versions < V2012.12), Nucleus Source Code (All versions), PLUSCONTROL 1st Gen (All versions), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). Initial Sequence Numbers (ISNs) for TCP connections are derived from an insufficiently random source. As a result, the ISN of current and future TCP connections could be predictable. An attacker could hijack existing sessions or spoof future ones.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-342 - Predictable Exact Value from Previous Values
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T16:33:58.999Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-28388",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-02T19:29:04.600159Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-02T20:14:56.054Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "APOGEE PXC Compact (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.5"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "APOGEE PXC Compact (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V2.8.20"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "APOGEE PXC Modular (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.5"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "APOGEE PXC Modular (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V2.8.20"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "Nucleus NET",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V5.2"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "Nucleus ReadyStart V3",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V2012.12"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "Nucleus Source Code",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "PLUSCONTROL 1st Gen",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "TALON TC Compact (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.5"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "TALON TC Modular (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions \u003c V2.8.20), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions \u003c V2.8.20), Nucleus NET (All versions \u003c V5.2), Nucleus ReadyStart V3 (All versions \u003c V2012.12), Nucleus Source Code (All versions), PLUSCONTROL 1st Gen (All versions), TALON TC Compact (BACnet) (All versions \u003c V3.5.5), TALON TC Modular (BACnet) (All versions \u003c V3.5.5). Initial Sequence Numbers (ISNs) for TCP connections are derived from an insufficiently random source. As a result, the ISN of current and future TCP connections could be predictable. An attacker could hijack existing sessions or spoof future ones."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-342",
              "description": "CWE-342: Predictable Exact Value from Previous Values",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-08-08T09:20:06.562Z",
        "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "shortName": "siemens"
      },
      "references": [
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2020-28388",
    "datePublished": "2021-02-09T00:00:00.000Z",
    "dateReserved": "2020-11-10T00:00:00.000Z",
    "dateUpdated": "2026-06-02T20:14:56.054Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-28388",
      "date": "2026-06-08",
      "epss": "0.00422",
      "percentile": "0.62441"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:siemens:capital_vstar:*:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"3EC45D63-0FB7-4995-AF45-B41F6EF6A9E2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"5.2\", \"matchCriteriaId\": \"7AA3D291-7974-459E-8629-82EEE9222881\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:siemens:nucleus_source_code:*:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"07DAF9C3-B56A-4F40-B90B-D0DE96869A44\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:siemens:pluscontrol_1st_gen:*:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"8A79FC04-B321-46B2-A363-5B964032856E\"}]}]}, {\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:siemens:nucleus_readystart:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"2012.12\", \"matchCriteriaId\": \"1C4577E0-9A51-45E6-8B07-C4AB711F2801\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:arm:arm:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"7533C487-7AD2-4B6E-B4B1-9D82BBF83CF3\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:mips:mips:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"838DEE07-4C15-4107-90B0-BEC2E081B3F0\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:powerpc_project:powerpc:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"EA4BF0DF-EE3D-4649-B7EE-F30D6473BE0B\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions \u003c V2.8.20), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions \u003c V2.8.20), Nucleus NET (All versions \u003c V5.2), Nucleus ReadyStart V3 (All versions \u003c V2012.12), Nucleus Source Code (All versions), PLUSCONTROL 1st Gen (All versions), TALON TC Compact (BACnet) (All versions \u003c V3.5.5), TALON TC Modular (BACnet) (All versions \u003c V3.5.5). Initial Sequence Numbers (ISNs) for TCP connections are derived from an insufficiently random source. As a result, the ISN of current and future TCP connections could be predictable. An attacker could hijack existing sessions or spoof future ones.\"}, {\"lang\": \"es\", \"value\": \"Se ha identificado una vulnerabilidad en Capital VSTAR (Todas las versiones), Nucleus NET (Todas las versiones anteriores a V5.2), Nucleus ReadyStart V3 (Todas las versiones anteriores a V2012.12), Nucleus Source Code (Todas las versiones), PLUSCONTROL 1st Gen (Todas las versiones). Los n\\u00fameros de secuencia iniciales (ISN) para las conexiones TCP se derivan de una fuente insuficientemente aleatoria. Como resultado, el ISN de las conexiones TCP actuales y futuras podr\\u00eda ser predecible. Un atacante podr\\u00eda secuestrar las sesiones existentes o falsificar las futuras\"}]",
      "id": "CVE-2020-28388",
      "lastModified": "2024-11-21T05:22:42.130",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"productcert@siemens.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"LOW\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 2.5}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"LOW\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:N/I:P/A:N\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2021-02-09T18:15:34.590",
      "references": "[{\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf\", \"source\": \"productcert@siemens.com\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf\", \"source\": \"productcert@siemens.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf\", \"source\": \"productcert@siemens.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf\", \"source\": \"productcert@siemens.com\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "productcert@siemens.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"productcert@siemens.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-342\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-Other\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-28388\",\"sourceIdentifier\":\"productcert@siemens.com\",\"published\":\"2021-02-09T18:15:34.590\",\"lastModified\":\"2024-11-21T05:22:42.130\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions \u003c V2.8.20), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions \u003c V2.8.20), Nucleus NET (All versions \u003c V5.2), Nucleus ReadyStart V3 (All versions \u003c V2012.12), Nucleus Source Code (All versions), PLUSCONTROL 1st Gen (All versions), TALON TC Compact (BACnet) (All versions \u003c V3.5.5), TALON TC Modular (BACnet) (All versions \u003c V3.5.5). Initial Sequence Numbers (ISNs) for TCP connections are derived from an insufficiently random source. As a result, the ISN of current and future TCP connections could be predictable. An attacker could hijack existing sessions or spoof future ones.\"},{\"lang\":\"es\",\"value\":\"Se ha identificado una vulnerabilidad en Capital VSTAR (Todas las versiones), Nucleus NET (Todas las versiones anteriores a V5.2), Nucleus ReadyStart V3 (Todas las versiones anteriores a V2012.12), Nucleus Source Code (Todas las versiones), PLUSCONTROL 1st Gen (Todas las versiones). Los n\u00fameros de secuencia iniciales (ISN) para las conexiones TCP se derivan de una fuente insuficientemente aleatoria. Como resultado, el ISN de las conexiones TCP actuales y futuras podr\u00eda ser predecible. Un atacante podr\u00eda secuestrar las sesiones existentes o falsificar las futuras\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"productcert@siemens.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":3.9,\"impactScore\":2.5},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:P/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"productcert@siemens.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-342\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:capital_vstar:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3EC45D63-0FB7-4995-AF45-B41F6EF6A9E2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.2\",\"matchCriteriaId\":\"7AA3D291-7974-459E-8629-82EEE9222881\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:nucleus_source_code:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07DAF9C3-B56A-4F40-B90B-D0DE96869A44\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:pluscontrol_1st_gen:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8A79FC04-B321-46B2-A363-5B964032856E\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:nucleus_readystart:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2012.12\",\"matchCriteriaId\":\"1C4577E0-9A51-45E6-8B07-C4AB711F2801\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:arm:arm:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7533C487-7AD2-4B6E-B4B1-9D82BBF83CF3\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:mips:mips:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"838DEE07-4C15-4107-90B0-BEC2E081B3F0\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:powerpc_project:powerpc:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"EA4BF0DF-EE3D-4649-B7EE-F30D6473BE0B\"}]}]}],\"references\":[{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf\",\"source\":\"productcert@siemens.com\"},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf\",\"source\":\"productcert@siemens.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf\",\"source\":\"productcert@siemens.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf\",\"source\":\"productcert@siemens.com\"},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T16:33:58.999Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2020-28388\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-02T19:29:04.600159Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-02T19:29:09.184Z\"}}], \"cna\": {\"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C\"}}], \"affected\": [{\"vendor\": \"Siemens\", \"product\": \"APOGEE PXC Compact (BACnet)\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions \u003c V3.5.5\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"APOGEE PXC Compact (P2 Ethernet)\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions \u003c V2.8.20\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"APOGEE PXC Modular (BACnet)\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions \u003c V3.5.5\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"APOGEE PXC Modular (P2 Ethernet)\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions \u003c V2.8.20\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"Nucleus NET\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions \u003c V5.2\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"Nucleus ReadyStart V3\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions \u003c V2012.12\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"Nucleus Source Code\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"PLUSCONTROL 1st Gen\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"TALON TC Compact (BACnet)\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions \u003c V3.5.5\"}], \"defaultStatus\": \"unknown\"}, {\"vendor\": \"Siemens\", \"product\": \"TALON TC Modular (BACnet)\", \"versions\": [{\"status\": \"affected\", \"version\": \"All versions \u003c V3.5.5\"}], \"defaultStatus\": \"unknown\"}], \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-362164.pdf\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-344238.pdf\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-436469.pdf\"}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions \u003c V2.8.20), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions \u003c V2.8.20), Nucleus NET (All versions \u003c V5.2), Nucleus ReadyStart V3 (All versions \u003c V2012.12), Nucleus Source Code (All versions), PLUSCONTROL 1st Gen (All versions), TALON TC Compact (BACnet) (All versions \u003c V3.5.5), TALON TC Modular (BACnet) (All versions \u003c V3.5.5). Initial Sequence Numbers (ISNs) for TCP connections are derived from an insufficiently random source. As a result, the ISN of current and future TCP connections could be predictable. An attacker could hijack existing sessions or spoof future ones.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-342\", \"description\": \"CWE-342: Predictable Exact Value from Previous Values\"}]}], \"providerMetadata\": {\"orgId\": \"cec7a2ec-15b4-4faf-bd53-b40f371f3a77\", \"shortName\": \"siemens\", \"dateUpdated\": \"2023-08-08T09:20:06.562Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2020-28388\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-02T20:14:56.054Z\", \"dateReserved\": \"2020-11-10T00:00:00.000Z\", \"assignerOrgId\": \"cec7a2ec-15b4-4faf-bd53-b40f371f3a77\", \"datePublished\": \"2021-02-09T00:00:00.000Z\", \"assignerShortName\": \"siemens\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.