CVE-2023-20064
Estado: ModificadaMedia (4.6)—
A vulnerability in the GRand Unified Bootloader (GRUB) for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files on the console using the GRUB bootloader command line. This vulnerability is due to the inclusion of unnecessary commands within the GRUB environment that allow sensitive files to be viewed. An attacker could exploit this vulnerability by being connected to the console port of the Cisco IOS XR device when the device is power-cycled. A successful exploit could allow the attacker to view sensitive files that could be used to conduct additional attacks against the device.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Puntuación base: 4.6
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.26%
- Percentil entre todas las CVEs puntuadas: 16
- Fecha de la puntuación: 7/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-862
- CWE-862
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-20064",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-20064",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-10-25T14:36:23.610206Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 4.6,
"attackVector": "PHYSICAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 0.9
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 4.6,
"attackVector": "PHYSICAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 0.9
}
]
},
"affected": [
{
"source": "psirt@cisco.com",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco IOS XR Software",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2023-03-09T22:15:52.277",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-load-infodisc-9rdOr5Fq",
"tags": [
"Vendor Advisory"
],
"source": "psirt@cisco.com"
},
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-load-infodisc-9rdOr5Fq",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-862"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-862"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the GRand Unified Bootloader (GRUB) for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files on the console using the GRUB bootloader command line. This vulnerability is due to the inclusion of unnecessary commands within the GRUB environment that allow sensitive files to be viewed. An attacker could exploit this vulnerability by being connected to the console port of the Cisco IOS XR device when the device is power-cycled. A successful exploit could allow the attacker to view sensitive files that could be used to conduct additional attacks against the device."
}
],
"lastModified": "2026-06-17T05:29:23.700",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A8E6CEEB-0908-4884-A51E-000000DE5E92",
"versionEndExcluding": "7.9.1"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:cisco:asr_9000v-v2:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "FAE7AE4D-73A6-4179-80DA-2219563928E1"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9001:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "E9B8E1A6-A438-441D-ADA2-BE2BF837EAA9"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "BB7DD32E-B22D-4392-B255-5C3F9CD39F3E"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "915D9708-E3AC-447A-A67C-815A8E282A42"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "E7D9C475-6E5D-4AE9-A8D4-5B023C128A46"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9902:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "0FF7BDEE-8351-4CE3-BEAD-42C8767E0BF8"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "A5266F35-6886-4CF1-81DB-25626A0A26A0"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "0FB63566-D9F5-4A36-87E2-AC87ADB9DE6C"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "910A1686-5B13-4D37-9C1F-2F0073D57E5F"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "430F0546-C2E9-41EE-8A8E-1C63945160F3"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "E1D3885B-7BEC-49DA-AE56-0DA18117C9E7"
},
{
"criteria": "cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:x64:*",
"vulnerable": false,
"matchCriteriaId": "1496BE0A-B0BA-48BC-A476-A85A6D62EA50"
},
{
"criteria": "cpe:2.3:h:cisco:ios_xrv_9000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "EEE98C3E-67E2-43A3-AEA9-1575F2B93A78"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_1001:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "0F6E0FBE-70B7-413C-8943-39BEFE050298"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_1002:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "37AE5FB0-D9A6-4EBE-9F7F-243299AE918B"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_1004:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "60C9AAF8-4C5B-4EF5-B575-8235F3C54BCC"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B25F4932-6940-4934-B110-577417B93948",
"versionEndExcluding": "7.6.1"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:cisco:nc57-18dd-se:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "98728BD8-C11B-413D-8C8A-052661A608AA"
},
{
"criteria": "cpe:2.3:h:cisco:nc57-24dd:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "71B61EB0-E121-4899-9504-269CE4E7E3EB"
},
{
"criteria": "cpe:2.3:h:cisco:nc57-36h-se:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "6811F99A-F96F-4B26-AF68-DC1A8C3B65E0"
},
{
"criteria": "cpe:2.3:h:cisco:nc57-36h6d-s:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "560B88A5-3716-43AB-A094-063293EF6509"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "BC7AE6C1-B7C6-4056-9719-B5CFF71970AD"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_540_fronthaul:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "F9C17E4B-1B14-42F2-BCE6-2D5020625382"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_5501:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "0A972EFE-4F7E-4BFC-8631-66A2D16B74A3"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "1B254955-C485-45D7-A19B-E78CE1D997AD"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_5502:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7F72AEF0-EE70-40F8-B52B-1390820B87BB"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "50C7B71A-2559-4E90-BAAA-C6FAAFE35FC3"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "43D21B01-A754-474F-8E46-14D733AB307E"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "17D6424C-972F-459C-B8F7-04FFD9F541BC"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_560-4:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "BB01E968-E838-4D3C-B603-BF7E4E0F8A2C"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_560-7:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "08864A59-0840-4407-8D30-9CE34BAF05E7"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_57b1-5dse-sys:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "13EEDD1C-25BC-4AFA-AF60-66DE36927528"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_57b1-6d24-sys:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "5CD3B06B-864E-4A35-B0C3-1654390022D2"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_57c1-48q6-sys:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "AD1B4F37-5AAA-4F40-8865-226289CB5CEB"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_57c3-mod-sys:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "355F78C3-C07F-48C3-9B6E-55714EAA7331"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_57c3-mods-sys:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "98F06B5D-6CE8-42C3-8760-89B4EF1FFC21"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C3FBC1F6-F523-485A-A466-B6DBA15E6537",
"versionEndExcluding": "7.7.1"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E2A8C028-107B-4410-BCC6-5BCB8DB63603"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "DA13FE67-F4AE-46DF-921B-3FB91BDF742B"
},
{
"criteria": "cpe:2.3:h:cisco:ncs_5011:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "98622F14-CC47-45E0-85E4-A7243309487C"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3C15E168-11DA-4219-B689-78BC48935263"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:cisco:ncs_6000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "523058BF-DE14-4FAD-8A67-C8CA795032D9"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "psirt@cisco.com"
}