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CVE-2026-26148

Estado: AnalizadaAlta (8.1)—

External initialization of trusted variables or data stores in Azure Entra ID allows an unauthorized attacker to elevate privileges locally.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector AV:L sin UI requiere acceso local sin interacción (T1068). CWE-454 (inicialización externa) en Azure AD SSH permite escalada de privilegios (T1548), potencialmente obteniendo acceso con credenciales elevadas (T1078.001).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution PreventionUpdate SoftwareUser Account ManagementThreat Intelligence ProgramRestrict File and Directory PermissionsPrivileged Account Management

Tecnologías afectadas (1)

Microsoft — Azure AD SSH Login Extension FOR Linux

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-26148",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-26148",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-10T18:00:53.165002Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "secure@microsoft.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 1.4
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Microsoft Azure AD SSH Login extension for Linux",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.0",
              "lessThan": "1.0.033370002",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-03-10T18:18:43.270",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26148",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-454"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "External initialization of trusted variables or data stores in Azure Entra ID allows an unauthorized attacker to elevate privileges locally."
    },
    {
      "lang": "es",
      "value": "Inicialización externa de variables de confianza o almacenes de datos en Azure Entra ID permite a un atacante no autorizado elevar privilegios localmente."
    }
  ],
  "lastModified": "2026-06-17T10:25:48.513",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:azure_ad_ssh_login_extension_for_linux:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "75EBD042-DA8D-4CEE-8EF6-B345AC60EBDF",
              "versionEndExcluding": "1.0.033370002",
              "versionStartIncluding": "1.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}