{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-4474","assignerOrgId":"96e50032-ad0d-4058-a115-4d2c13821f9f","state":"PUBLISHED","assignerShortName":"Zyxel","dateReserved":"2023-08-22T06:51:34.440Z","datePublished":"2023-11-30T01:45:29.920Z","dateUpdated":"2025-12-16T18:23:26.346Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"NAS326 firmware","vendor":"Zyxel","versions":[{"status":"affected","version":"V5.21(AAZF.14)C0"}]},{"defaultStatus":"unaffected","product":"NAS542 firmware","vendor":"Zyxel","versions":[{"status":"affected","version":"V5.21(ABAG.11)C0"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The improper neutralization of special elements in the WSGI server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted URL to a vulnerable device."}],"value":"The improper neutralization of special elements in the WSGI server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted URL to a vulnerable device."}],"metrics":[{"cvssV3_1":{"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"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","description":"CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"96e50032-ad0d-4058-a115-4d2c13821f9f","shortName":"Zyxel","dateUpdated":"2023-12-06T01:37:39.050Z"},"references":[{"tags":["vendor-advisory"],"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products"},{"url":"https://bugprove.com/knowledge-hub/cve-2023-4473-and-cve-2023-4474-authentication-bypass-and-multiple-blind-os-command-injection-vulnerabilities-in-zyxel-s-nas-326-devices/"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2023-4474","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2024-05-03T04:00:16.790117Z"}}}],"affected":[{"cpes":["cpe:2.3:o:zyxel:nas326_firmware:5.21\\(aazf.14\\)c0:*:*:*:*:*:*:*"],"vendor":"zyxel","product":"nas326_firmware","versions":[{"status":"affected","version":"5.21\\(aazf.14\\)c0"}],"defaultStatus":"unknown"},{"cpes":["cpe:2.3:o:zyxel:nas542_firmware:5.21\\(abag.11\\)c0:*:*:*:*:*:*:*"],"vendor":"zyxel","product":"nas542_firmware","versions":[{"status":"affected","version":"5.21\\(abag.11\\)c0"}],"defaultStatus":"unknown"}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-12-16T18:23:26.346Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T07:31:05.490Z"},"title":"CVE Program Container","references":[{"tags":["vendor-advisory","x_transferred"],"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products"},{"url":"https://bugprove.com/knowledge-hub/cve-2023-4473-and-cve-2023-4474-authentication-bypass-and-multiple-blind-os-command-injection-vulnerabilities-in-zyxel-s-nas-326-devices/","tags":["x_transferred"]}]}]}}