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vuln-cve/data/2021/27xxx/CVE-2021-27391.json
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{
"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": {
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"ID": "CVE-2021-27391",
"STATE": "PUBLIC"
},
"affects": {
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"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": {
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]
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},
{
"product_name": "APOGEE PXC Compact (BACnet)",
"version": {
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{
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"version": {
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}
},
{
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"version": {
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{
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"version": {
"version_data": [
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"version_value": "All versions >= V2.8"
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]
}
},
{
"product_name": "TALON TC Compact (BACnet)",
"version": {
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"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."
}
]
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"problemtype": {
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"description": [
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"lang": "eng",
"value": "CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"
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"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"
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"shortName": "CVE",
"dateUpdated": "2024-08-03T20:48:16.974Z"
},
"title": "CVE Program Container",
"references": [
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"tags": [
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"x_transferred"
],
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf"
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},
{
"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"
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