FKIE_CVE-2020-24556

Vulnerability from fkie_nvd - Published: 2020-09-01 19:15 - Updated: 2026-06-17 03:05
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A vulnerability in Trend Micro Apex One, OfficeScan XG SP1, Worry-Free Business Security 10 SP1 and Worry-Free Business Security Services on Microsoft Windows may allow an attacker to create a hard link to any file on the system, which then could be manipulated to gain a privilege escalation and code execution. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Please note that version 1909 (OS Build 18363.719) of Microsoft Windows 10 mitigates hard links, but previous versions are affected.
References
security@trendmicro.comhttps://success.trendmicro.com/solution/000263632Vendor Advisory
security@trendmicro.comhttps://success.trendmicro.com/solution/000263633Vendor Advisory
security@trendmicro.comhttps://success.trendmicro.com/solution/000267260Vendor Advisory
security@trendmicro.comhttps://www.zerodayinitiative.com/advisories/ZDI-20-1093/Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://success.trendmicro.com/solution/000263632Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://success.trendmicro.com/solution/000263633Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://success.trendmicro.com/solution/000267260Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.zerodayinitiative.com/advisories/ZDI-20-1093/Third Party Advisory, VDB Entry
Impacted products
Vendor Product Version
trendmicro apex_one 2019
trendmicro apex_one saas
microsoft windows -
trendmicro worry-free_business_security 10.0
trendmicro worry-free_business_security_services -
apple macos -
microsoft windows -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Trend Micro Apex One",
          "vendor": "Trend Micro",
          "versions": [
            {
              "status": "affected",
              "version": "2009 (on premise), SaaS"
            }
          ]
        },
        {
          "product": "Trend Micro OfficeScan",
          "vendor": "Trend Micro",
          "versions": [
            {
              "status": "affected",
              "version": "XG SP1"
            }
          ]
        },
        {
          "product": "Trend Micro Worry-Free Business Security",
          "vendor": "Trend Micro",
          "versions": [
            {
              "status": "affected",
              "version": "10 SP1, Services (SaaS)"
            }
          ]
        }
      ],
      "source": "security@trendmicro.com"
    }
  ],
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              "vulnerable": true
            },
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      ],
      "operator": "AND"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in Trend Micro Apex One, OfficeScan XG SP1, Worry-Free Business Security 10 SP1 and Worry-Free Business Security Services on Microsoft Windows may allow an attacker to create a hard link to any file on the system, which then could be manipulated to gain a privilege escalation and code execution. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Please note that version 1909 (OS Build 18363.719) of Microsoft Windows 10 mitigates hard links, but previous versions are affected."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en Trend Micro Apex One, OfficeScan XG SP1, Worry-Free Business Security 10 SP1 y Worry-Free Business Security Services en Microsoft Windows, puede permitir a un atacante crear un enlace f\u00edsico para cualquier archivo en el sistema, que luego podr\u00eda manipularse para obtener una escalada de privilegios y una ejecuci\u00f3n de c\u00f3digo. Un atacante debe primero obtener la capacidad de ejecutar c\u00f3digo poco privilegiado en el sistema objetivo para explotar esta vulnerabilidad. Tenga en cuenta que la versi\u00f3n 1909 (compilaci\u00f3n del SO 18363.719) de Microsoft Windows 10 mitiga los enlaces f\u00edsicos, pero las versiones anteriores est\u00e1n afectadas"
    }
  ],
  "id": "CVE-2020-24556",
  "lastModified": "2026-06-17T03:05:45.317",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.2,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-09-01T19:15:11.807",
  "references": [
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      "tags": [
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      "url": "https://success.trendmicro.com/solution/000263632"
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      "tags": [
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    },
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    },
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      "tags": [
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    },
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  ],
  "sourceIdentifier": "security@trendmicro.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.