{"containers":{"cna":{"affected":[{"product":"APOGEE MBC (PPC) (P2 Ethernet)","vendor":"Siemens","versions":[{"status":"affected","version":"All versions >= V2.6.3"}]},{"product":"APOGEE MEC (PPC) (P2 Ethernet)","vendor":"Siemens","versions":[{"status":"affected","version":"All versions >= V2.6.3"}]},{"product":"APOGEE PXC Compact (BACnet)","vendor":"Siemens","versions":[{"status":"affected","version":"All versions < V3.5.3"}]},{"product":"APOGEE PXC Compact (P2 Ethernet)","vendor":"Siemens","versions":[{"status":"affected","version":"All versions >= V2.8"}]},{"product":"APOGEE PXC Modular (BACnet)","vendor":"Siemens","versions":[{"status":"affected","version":"All versions < V3.5.3"}]},{"product":"APOGEE PXC Modular (P2 Ethernet)","vendor":"Siemens","versions":[{"status":"affected","version":"All versions >= V2.8"}]},{"product":"TALON TC Compact (BACnet)","vendor":"Siemens","versions":[{"status":"affected","version":"All versions < V3.5.3"}]},{"product":"TALON TC Modular (BACnet)","vendor":"Siemens","versions":[{"status":"affected","version":"All versions < V3.5.3"}]}],"descriptions":[{"lang":"en","value":"A vulnerability has been identified in APOGEE MBC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE MEC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE PXC Compact (BACnet) (All versions < V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions >= V2.8), APOGEE PXC Modular (BACnet) (All versions < V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions >= V2.8), TALON TC Compact (BACnet) (All versions < V3.5.3), TALON TC Modular (BACnet) (All versions < V3.5.3). The web server of affected devices lacks proper bounds checking when parsing the Host parameter in HTTP requests, which could lead to a buffer overflow. An unauthenticated remote attacker could exploit this vulnerability to execute arbitrary code on the device with root privileges."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","description":"CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2021-09-14T10:47:31.000Z","orgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","shortName":"siemens"},"references":[{"tags":["x_refsource_MISC"],"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"productcert@siemens.com","ID":"CVE-2021-27391","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"APOGEE MBC (PPC) (P2 Ethernet)","version":{"version_data":[{"version_value":"All versions >= V2.6.3"}]}},{"product_name":"APOGEE MEC (PPC) (P2 Ethernet)","version":{"version_data":[{"version_value":"All versions >= V2.6.3"}]}},{"product_name":"APOGEE PXC Compact (BACnet)","version":{"version_data":[{"version_value":"All versions < V3.5.3"}]}},{"product_name":"APOGEE PXC Compact (P2 Ethernet)","version":{"version_data":[{"version_value":"All versions >= V2.8"}]}},{"product_name":"APOGEE PXC Modular (BACnet)","version":{"version_data":[{"version_value":"All versions < V3.5.3"}]}},{"product_name":"APOGEE PXC Modular (P2 Ethernet)","version":{"version_data":[{"version_value":"All versions >= V2.8"}]}},{"product_name":"TALON TC Compact (BACnet)","version":{"version_data":[{"version_value":"All versions < V3.5.3"}]}},{"product_name":"TALON TC Modular (BACnet)","version":{"version_data":[{"version_value":"All versions < V3.5.3"}]}}]},"vendor_name":"Siemens"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A vulnerability has been identified in APOGEE MBC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE MEC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE PXC Compact (BACnet) (All versions < V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions >= V2.8), APOGEE PXC Modular (BACnet) (All versions < V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions >= V2.8), TALON TC Compact (BACnet) (All versions < V3.5.3), TALON TC Modular (BACnet) (All versions < V3.5.3). The web server of affected devices lacks proper bounds checking when parsing the Host parameter in HTTP requests, which could lead to a buffer overflow. An unauthenticated remote attacker could exploit this vulnerability to execute arbitrary code on the device with root privileges."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"}]}]},"references":{"reference_data":[{"name":"https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf","refsource":"MISC","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf"}]}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T20:48:16.974Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf"}]},{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-04-23T13:27:50.374532Z","id":"CVE-2021-27391","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-04-23T19:28:38.162Z"}}]},"cveMetadata":{"assignerOrgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","assignerShortName":"siemens","cveId":"CVE-2021-27391","datePublished":"2021-09-14T10:47:31.000Z","dateReserved":"2021-02-18T00:00:00.000Z","dateUpdated":"2025-04-23T19:28:38.162Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}