{"api_version":"1","generated_at":"2026-04-22T21:37:46+00:00","cve":"CVE-2020-15795","urls":{"html":"https://cve.report/CVE-2020-15795","api":"https://cve.report/api/cve/CVE-2020-15795.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-15795","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-15795"},"summary":{"title":"CVE-2020-15795","description":"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 Source Code (Versions including affected DNS modules), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS domain name label parsing functionality does not properly validate the names in DNS-responses. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition.","state":"PUBLIC","assigner":"productcert@siemens.com","published_at":"2021-04-22 21:15:00","updated_at":"2023-08-08 10:15:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf","name":"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf","refsource":"MISC","tags":[],"title":"","mime":"application/pdf","httpstatus":"200","archivestatus":"200"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf","name":"https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf","refsource":"MISC","tags":[],"title":"","mime":"application/pdf","httpstatus":"200","archivestatus":"404"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-103-04","name":"https://us-cert.cisa.gov/ics/advisories/icsa-21-103-04","refsource":"CONFIRM","tags":[],"title":"Siemens Nucleus Products DNS Module | CISA","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-15795","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15795","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"15795","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"siemens","cpe5":"capital_vstar","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"15795","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"siemens","cpe5":"nucleus_net","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"15795","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"siemens","cpe5":"nucleus_rtos","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"15795","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"siemens","cpe5":"nucleus_source_code","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"15795","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"siemens","cpe5":"vstar","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"data_version":"4.0","data_type":"CVE","data_format":"MITRE","CVE_data_meta":{"ID":"CVE-2020-15795","ASSIGNER":"productcert@siemens.com","STATE":"PUBLIC"},"description":{"description_data":[{"lang":"eng","value":"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 Source Code (Versions including affected DNS modules), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS domain name label parsing functionality does not properly validate the names in DNS-responses. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-787: Out-of-bounds Write","cweId":"CWE-787"}]}]},"affects":{"vendor":{"vendor_data":[{"vendor_name":"Siemens","product":{"product_data":[{"product_name":"APOGEE PXC Compact (BACnet)","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V3.5.5"}]}},{"product_name":"APOGEE PXC Compact (P2 Ethernet)","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V2.8.20"}]}},{"product_name":"APOGEE PXC Modular (BACnet)","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V3.5.5"}]}},{"product_name":"APOGEE PXC Modular (P2 Ethernet)","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V2.8.20"}]}},{"product_name":"Nucleus NET","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V5.2"}]}},{"product_name":"Nucleus Source Code","version":{"version_data":[{"version_affected":"=","version_value":"Versions including affected DNS modules"}]}},{"product_name":"TALON TC Compact (BACnet)","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V3.5.5"}]}},{"product_name":"TALON TC Modular (BACnet)","version":{"version_data":[{"version_affected":"=","version_value":"All versions < V3.5.5"}]}}]}}]}},"references":{"reference_data":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf","refsource":"MISC","name":"https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf","refsource":"MISC","name":"https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf"}]},"impact":{"cvss":[{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","baseScore":8.1,"baseSeverity":"HIGH"}]}},"nvd":{"publishedDate":"2021-04-22 21:15:00","lastModifiedDate":"2023-08-08 10:15:00","problem_types":["CWE-787"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":6.8},"severity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*","versionEndExcluding":"5.2","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"15795","Ordinal":"177195","Title":"CVE-2020-15795","CVE":"CVE-2020-15795","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"15795","Ordinal":"1","NoteData":"A vulnerability has been identified in Nucleus NET (All versions < V5.2), Nucleus Source Code (Versions including affected DNS modules). The DNS domain name label parsing functionality does not properly validate the names in DNS-responses. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"15795","Ordinal":"2","NoteData":"2021-04-22","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"15795","Ordinal":"3","NoteData":"2022-01-11","Type":"Other","Title":"Modified"}]}}}