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CVE-2020-1025

Estado: ModificadaCrítica (9.8)—

An elevation of privilege vulnerability exists when Microsoft SharePoint Server and Skype for Business Server improperly handle OAuth token validation. An attacker who successfully exploited the vulnerability could bypass authentication and achieve improper access. To exploit this vulnerability, an attacker would need to modify the token. The update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens.

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.

Fuente: mapeo oficial MITRE CTID (CVE → ATT&CK).

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkFilter Network TrafficApplication Isolation and Sandboxing

Tecnologías afectadas (5)

Microsoft — LyncMicrosoft — Sharepoint Enterprise ServerMicrosoft — Sharepoint FoundationMicrosoft — Sharepoint ServerMicrosoft — Skype FOR Business

CWE

Referencias

JSON original (NVD)

Mostrar
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  "published": "2020-07-14T23:15:11.447",
  "references": [
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      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025",
      "tags": [
        "Patch",
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      "source": "secure@microsoft.com"
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      "description": [
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          "value": "CWE-20"
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      "lang": "en",
      "value": "An elevation of privilege vulnerability exists when Microsoft SharePoint Server and Skype for Business Server improperly handle OAuth token validation. An attacker who successfully exploited the vulnerability could bypass authentication and achieve improper access.\nTo exploit this vulnerability, an attacker would need to modify the token.\nThe update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de elevación de privilegios cuando Microsoft SharePoint Server y Skype for Business Server manejan inapropiadamente la comprobación de del token de OAuth, también se conoce como \"Microsoft Office Elevation of Privilege Vulnerability\""
    }
  ],
  "lastModified": "2026-06-17T03:00:15.000",
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