« Volver al listado

CVE-2021-1244

Estado: ModificadaMedia (6.7)—

Multiple vulnerabilities in Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for the Cisco 8000 Series Routers could allow an authenticated, local attacker to execute unsigned code during the boot process on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS

Probabilidad de explotación (EPSS)

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)

Cisco — IOS XR

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-1244",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-1244",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-11-08T20:25:25.677398Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 0.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.7,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 0.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "Cisco",
          "product": "Cisco IOS XR Software",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-02-04T17:15:14.777",
  "references": [
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxr-l-zNhcGCBt",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    },
    {
      "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxr-l-zNhcGCBt",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple vulnerabilities in Cisco Network Convergence System (NCS) 540 Series Routers, only when running Cisco IOS XR NCS540L software images, and Cisco IOS XR Software for the Cisco 8000 Series Routers could allow an authenticated, local attacker to execute unsigned code during the boot process on an affected device. For more information about these vulnerabilities, see the Details section of this advisory."
    },
    {
      "lang": "es",
      "value": "Múltiples vulnerabilidades en los Enrutadores Cisco Network Convergence System (NCS) 540 Series, solo cuando ejecutan imágenes de Software de NCS540L de Cisco IOS XR, y el Software Cisco IOS XR para los Enrutadores Cisco 8000 Series, podrían permitir a un atacante autenticado local ejecutar código sin firmar durante el proceso de arranque en un dispositivo afectado. Para mayor información sobre estas vulnerabilidades, consulte la sección Detalles de este aviso"
    }
  ],
  "lastModified": "2026-06-17T03:31:18.547",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9CED0163-5695-4267-8677-1E2C42D73FED",
              "versionEndExcluding": "7.0.12"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DDFFC1A3-D76E-4CF9-97F8-D45493CFF949",
              "versionEndExcluding": "7.2.1",
              "versionStartIncluding": "7.1.0"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:8201:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "3D8E7FFF-82A8-4ECB-BA0C-CBF0C2FDA3A3"
            },
            {
              "criteria": "cpe:2.3:h:cisco:8202:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "87DC4C2F-01C5-4D89-8D79-E5D28EDAD0F2"
            },
            {
              "criteria": "cpe:2.3:h:cisco:8808:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "F5E2AE67-DED3-4414-A194-386ADB2C8DC7"
            },
            {
              "criteria": "cpe:2.3:h:cisco:8812:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "3920133A-684D-4A9F-B65A-FF4EAE5052E5"
            },
            {
              "criteria": "cpe:2.3:h:cisco:8818:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "9ED06361-5A68-4656-AEA5-240C290594CD"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9EEE27AF-9402-4DFA-B1CF-E51972485918",
              "versionEndExcluding": "7.2.1"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:cisco:ncs_540:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "BC7AE6C1-B7C6-4056-9719-B5CFF71970AD"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}