CVE-2023-4473

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-4473", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "state": "PUBLISHED", "assignerShortName": "Zyxel", "dateReserved": "2023-08-22T06:51:30.982Z", "datePublished": "2023-11-30T01:40:09.117Z", "dateUpdated": "2025-12-16T18:23:26.188Z"}, "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": "A command injection vulnerability in the web 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": "A command injection vulnerability in the web 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": "2023-12-06T01:37:35.078Z"}, "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-2023-4473", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2024-05-03T04:00:16.063044Z"}}}], "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": "2025-12-16T18:23:26.188Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T07:31:05.492Z"}, "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"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products", "tags": ["vendor-advisory", "x_transferred"]}, {"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"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T07:31:05.492Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-4473", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2024-05-03T04:00:16.063044Z"}}}], "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"}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-03T13:11:48.419Z"}}], "cna": {"source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Zyxel", "product": "NAS326 firmware", "versions": [{"status": "affected", "version": "V5.21(AAZF.14)C0"}], "defaultStatus": "unaffected"}, {"vendor": "Zyxel", "product": "NAS542 firmware", "versions": [{"status": "affected", "version": "V5.21(ABAG.11)C0"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products", "tags": ["vendor-advisory"]}, {"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/"}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "descriptions": [{"lang": "en", "value": "A command injection vulnerability in the web 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.", "supportingMedia": [{"type": "text/html", "value": "A command injection vulnerability in the web 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.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-78", "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"}]}], "providerMetadata": {"orgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "shortName": "Zyxel", "dateUpdated": "2023-12-06T01:37:35.078Z"}}}, "cveMetadata": {"cveId": "CVE-2023-4473", "state": "PUBLISHED", "dateUpdated": "2025-12-16T18:23:26.188Z", "dateReserved": "2023-08-22T06:51:30.982Z", "assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f", "datePublished": "2023-11-30T01:40:09.117Z", "assignerShortName": "Zyxel"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"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"}]}], "source": "security@zyxel.com.tw"}, {"affectedData": [{"cpes": ["cpe:2.3:o:zyxel:nas326_firmware:5.21\\(aazf.14\\)c0:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "nas326_firmware", "vendor": "zyxel", "versions": [{"status": "affected", "version": "5.21\\(aazf.14\\)c0"}]}, {"cpes": ["cpe:2.3:o:zyxel:nas542_firmware:5.21\\(abag.11\\)c0:*:*:*:*:*:*:*"], "defaultStatus": "unknown", "product": "nas542_firmware", "vendor": "zyxel", "versions": [{"status": "affected", "version": "5.21\\(abag.11\\)c0"}]}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:nas326_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "897157F4-9F3E-4F03-91DF-6223C1BAA451", "versionEndIncluding": "5.21\\(aazf.14\\)c0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:nas326:-:*:*:*:*:*:*:*", "matchCriteriaId": "E0A01B19-4A91-4FBC-8447-2E854346DAC5", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:zyxel:nas542_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "0A0D05F3-0FBD-43D0-8041-2AAF822B83C5", "versionEndIncluding": "5.21\\(abag.11\\)c0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:zyxel:nas542:-:*:*:*:*:*:*:*", "matchCriteriaId": "31C4DD0F-28D0-4BF7-897B-5EEC32AA7277", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A command injection vulnerability in the web 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."}, {"lang": "es", "value": "Una vulnerabilidad de inyecci\u00f3n de comandos en el servidor web de la versi\u00f3n de firmware V5.21(AAZF.14)C0 de Zyxel NAS326 y la versi\u00f3n de firmware NAS542 V5.21(ABAG.11)C0 podr\u00eda permitir que un atacante no autenticado ejecute algunos comandos del sistema operativo (SO). enviando una URL manipulada a un dispositivo vulnerable."}], "id": "CVE-2023-4473", "lastModified": "2026-06-17T06:37:54.547", "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"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security@zyxel.com.tw", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-4473", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-05-03T04:00:16.063044Z", "version": "2.0.3"}}]}, "published": "2023-11-30T02:15:43.347", "references": [{"source": "security@zyxel.com.tw", "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": "security@zyxel.com.tw", "tags": ["Patch", "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"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "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": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "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"}], "sourceIdentifier": "security@zyxel.com.tw", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security@zyxel.com.tw", "type": "Secondary"}]}

{}

{}