{"id":"CVE-2023-39239","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-39239","generatedAt":"2026-10-27T23:56:32.102Z","title":"It is identified a format string vulnerability in ASUS RT-AX56U V2’s General function API.","description":"\nIt is identified a format string vulnerability in ASUS RT-AX56U V2’s General function API. This vulnerability is caused by lacking validation for a specific value within its  apply.cgi module. A remote attacker with administrator privilege can exploit this vulnerability to perform remote arbitrary code execution, arbitrary system operation or disrupt service.\n\n","published":"2023-09-07T08:15:08.000Z","lastModified":"2026-06-17T06:11:50.000Z","status":"Modified","sourceIdentifier":"twcert@cert.org.tw","cvss":{"version":"3.1","score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-134"],"affected":["asus/rt-ax55 firmware","asus/rt-ax56u v2 firmware","asus/rt-ac86u firmware"],"epss":{"score":0.0128,"percentile":0.6982,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://https://www.twcert.org.tw/tw/cp-132-7355-0ce8d-1.html","tags":["Broken Link"],"source":"twcert@cert.org.tw"},{"url":"https://https://www.twcert.org.tw/tw/cp-132-7355-0ce8d-1.html","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-39239","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}