{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-08-01T23:09:47.917","vulnerabilities":[{"cve":{"id":"CVE-2023-35138","sourceIdentifier":"security@zyxel.com.tw","published":"2023-11-30T02:15:42.737","lastModified":"2026-06-17T06:04:28.153","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A command injection vulnerability in the “show_zysync_server_contents” function 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 HTTP POST request."},{"lang":"es","value":"Una vulnerabilidad de inyección de comando en la función “show_zysync_server_contents” de la versión de firmware V5.21(AAZF.14)C0 de Zyxel NAS326 y la versión de firmware NAS542 V5.21(ABAG.11)C0 podría permitir que un atacante no autenticado ejecute algún comando sistema operativo (OS) enviando una solicitud HTTP POST manipulada."}],"affected":[{"source":"security@zyxel.com.tw","affectedData":[{"vendor":"Zyxel","product":"NAS326 firmware","defaultStatus":"unaffected","versions":[{"version":"V5.21(AAZF.14)C0","status":"affected"}]},{"vendor":"Zyxel","product":"NAS542 firmware","defaultStatus":"unaffected","versions":[{"version":"V5.21(ABAG.11)C0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security@zyxel.com.tw","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"weaknesses":[{"source":"security@zyxel.com.tw","type":"Secondary","description":[{"lang":"en","value":"CWE-78"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-78"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:nas326_firmware:*:*:*:*:*:*:*:*","versionEndIncluding":"5.21\\(aazf.14\\)c0","matchCriteriaId":"897157F4-9F3E-4F03-91DF-6223C1BAA451"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:nas326:-:*:*:*:*:*:*:*","matchCriteriaId":"E0A01B19-4A91-4FBC-8447-2E854346DAC5"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:zyxel:nas542_firmware:*:*:*:*:*:*:*:*","versionEndIncluding":"5.21\\(abag.11\\)c0","matchCriteriaId":"0A0D05F3-0FBD-43D0-8041-2AAF822B83C5"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:zyxel:nas542:-:*:*:*:*:*:*:*","matchCriteriaId":"31C4DD0F-28D0-4BF7-897B-5EEC32AA7277"}]}]}],"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products","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","tags":["Patch","Vendor Advisory"]}]}}]}