{
  "id": "CVE-2022-45440",
  "sourceIdentifier": "security@zyxel.com.tw",
  "published": "2023-01-17T02:15:09.517",
  "lastModified": "2023-01-25T15:07:42.860",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0, which processes symbolic links on external storage media. A local authenticated attacker with administrator privileges could abuse this vulnerability to access the root file system by creating a symbolic link on external storage media, such as a USB flash drive, and then logging into the FTP server on a vulnerable device."
    }
  ],
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          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 3.6
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          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM"
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        "exploitabilityScore": 0.8,
        "impactScore": 3.6
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  "weaknesses": [
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      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-552"
        }
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    },
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      "source": "security@zyxel.com.tw",
      "type": "Secondary",
      "description": [
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          "lang": "en",
          "value": "CWE-552"
        }
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  "configurations": [
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  "references": [
    {
      "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-cleartext-storage-of-wifi-credentials-and-improper-symbolic-links-of-ftp-for-ax7501-b0-cpe",
      "source": "security@zyxel.com.tw",
      "tags": [
        "Vendor Advisory"
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    }
  ]
}