{"id":"CVE-2023-39809","title":"N.V.K.INTER CO., LTD","summary":"N.V.K.INTER CO., LTD. (NVK) iBSG v3.5 was discovered to contain an OS command injection vulnerability via shell metacharacters in the system_hostname parameter at /manage/network-basic.php.","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-77","CWE-77"],"vendor":"nvki","product":"intelligent_broadband_subscriber_gateway","affected":["intelligent_broadband_subscriber_gateway = 3.5"],"published":"2023-08-21","updated":"2026-07-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-39809","references":[{"url":"https://github.com/maride","label":"cve@mitre.org"},{"url":"https://sec.maride.cc/posts/ibsg/","label":"cve@mitre.org"},{"url":"http://ibsg.com","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://nvkinter.com","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.01493,"epssPercentile":0.72591,"ingestedAt":"2026-07-06T16:44:34.230Z","slug":"CVE-2023-39809","body":"## Overview\n\nN.V.K.INTER CO., LTD. (NVK) iBSG v3.5 was discovered to contain an OS command injection vulnerability via shell metacharacters in the system_hostname parameter at /manage/network-basic.php.\n\n## Affected\n\n- `intelligent_broadband_subscriber_gateway = 3.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}