« Volver al listado

CVE-2026-16923

Estado: AnalizadaAlta (7.8)—

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to improper privilege management.

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.

Vulnerabilidad local (AV:L, PR:L) de gestión deficiente de privilegios (CWE-269) en AIX/VIOS que permite escalada de privilegios sin interacción del usuario.

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

Threat Intelligence ProgramExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (2)

IBM — AIXIBM — Vios

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-16923",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-16923",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-20T00:00:00+00:00"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@us.ibm.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:aix:7.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:aix:7.2.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:aix:7.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:aix:7.3.0:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "AIX",
          "versions": [
            {
              "status": "affected",
              "version": "7.2"
            },
            {
              "status": "affected",
              "version": "7.3"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ibm:powervm_vios:4.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:powervm_vios:4.1.0:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "PowerVM VIOS",
          "versions": [
            {
              "status": "affected",
              "version": "4.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-20T15:17:28.433",
  "references": [
    {
      "url": "https://www.ibm.com/support/pages/node/7283858",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@us.ibm.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to improper privilege management."
    }
  ],
  "lastModified": "2026-08-24T20:55:38.233",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4A14B743-DDD2-467F-90E7-3431CE35F835",
              "versionEndExcluding": "4.1.0.50",
              "versionStartIncluding": "4.1.0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "37B446F0-EE99-42EA-99EE-80E517FDCB78",
              "versionEndExcluding": "4.1.1.30",
              "versionStartIncluding": "4.1.1.0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6245F535-1896-4CC5-8EC9-89C8EF455B8C",
              "versionEndExcluding": "4.1.2.20",
              "versionStartIncluding": "4.1.2.0"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EB84A37D-4C98-44FC-8B9B-E14DA7C88ED5",
              "versionEndIncluding": "7.2.5.212",
              "versionStartIncluding": "7.2.5"
            },
            {
              "criteria": "cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EA55F75D-C50C-46D2-93CC-EABB8F49B03F",
              "versionEndIncluding": "7.3.2.5",
              "versionStartIncluding": "7.3.2"
            },
            {
              "criteria": "cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B4115FCC-1026-417E-8D30-237B2C90367E",
              "versionEndIncluding": "7.3.3.2",
              "versionStartIncluding": "7.3.3"
            },
            {
              "criteria": "cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "340ADD53-8363-4CDA-AEEB-8DC7CB0088D5",
              "versionEndIncluding": "7.3.4.1",
              "versionStartIncluding": "7.3.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com"
}