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CVE-2026-20815

Estado: AnalizadaAlta (7)—

Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access Management Service (camsvc) allows an authorized 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.

Vulnerabilidad local (AV:L) sin interacción de usuario que permite escalada de privilegios mediante race condition en servicio de Windows. La descripción explícita de elevación de privilegios y el CWE-362 (race condition) sustentan T1068 tanto en explotación como impacto.

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 (3)

Microsoft — Windows 11 24h2Microsoft — Windows 11 25h2Microsoft — Windows Server 2025

CWE

Referencias

JSON original (NVD)

Mostrar
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  "cveTags": [],
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        "ssvcData": {
          "id": "CVE-2026-20815",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-14T04:55:53.428324Z"
        }
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    ],
    "cvssMetricV31": [
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          "integrityImpact": "HIGH",
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          "attackComplexity": "HIGH",
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          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1
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  "affected": [
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      "affectedData": [
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          "vendor": "Microsoft",
          "product": "Windows 11 Version 24H2",
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  ],
  "published": "2026-01-13T18:16:08.273",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20815",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
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          "value": "CWE-362"
        }
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  "descriptions": [
    {
      "lang": "en",
      "value": "Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally."
    },
    {
      "lang": "es",
      "value": "Ejecución concurrente utilizando un recurso compartido con sincronización inadecuada ('condición de carrera') en el Servicio de Gestión de Acceso a Capacidades (camsvc) permite a un atacante autorizado elevar privilegios localmente."
    }
  ],
  "lastModified": "2026-07-30T21:16:57.863",
  "configurations": [
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}