FKIE_CVE-2023-27992

Vulnerability from fkie_nvd - Published: 2023-06-19 12:15 - Updated: 2025-10-27 17:05
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.14)C0, NAS540 firmware versions prior to V5.21(AATB.11)C0, and NAS542 firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request.
References
security@zyxel.com.twhttps://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-pre-authentication-command-injection-vulnerability-in-nas-productsPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-pre-authentication-command-injection-vulnerability-in-nas-productsPatch, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27992US Government Resource
Impacted products
Vendor Product Version
zyxel nas326_firmware *
zyxel nas326 -
zyxel nas540_firmware *
zyxel nas540 -
zyxel nas542_firmware *
zyxel nas542 -
To clipboard 

{
  "cisaActionDue": "2023-07-14",
  "cisaExploitAdd": "2023-06-23",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "Zyxel Multiple NAS Devices Command Injection Vulnerability",
  "configurations": [
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              "matchCriteriaId": "A4A72863-E165-4A25-B53F-EE5F97236C5A",
              "versionEndExcluding": "5.21\\(aazf.14\\)c0",
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            }
          ],
          "negate": false,
          "operator": "OR"
        },
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      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The pre-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to\u00a0V5.21(AAZF.14)C0, NAS540 firmware versions prior to\u00a0V5.21(AATB.11)C0, and NAS542\u00a0firmware versions prior to V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands remotely by sending a crafted HTTP request."
    }
  ],
  "id": "CVE-2023-27992",
  "lastModified": "2025-10-27T17:05:04.283",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
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        "impactScore": 5.9,
        "source": "security@zyxel.com.tw",
        "type": "Secondary"
      }
    ]
  },
  "published": "2023-06-19T12:15:09.433",
  "references": [
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      "tags": [
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    }
  ],
  "sourceIdentifier": "security@zyxel.com.tw",
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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