{ "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" }