CVE•Published 2023-08-21•Modified 2026-07-09•1 article on news•6 live references•NVD data
CVE-2023-39809Nvki · Intelligent_broadband_subscriber_gateway
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
66
Exploit Prediction Scoring System · top 34% of all CVEs
Weaknesses (CWE)
Description
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.
Timeline
Published 2023-08-21
Modified 2026-07-09
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2023-39809Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Nvki Intelligent Broadband Subscriber Gateway" version:"3.5"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Intelligent Broadband Subscriber Gateway"HTTP body or banner mentions "Intelligent Broadband Subscriber Gateway" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2023-39809Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2023-39809Censys host search filtered to this CVE id.
grep.app
CVE-2023-39809Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2023-39809GitHub code search for direct mentions.
Google dork
"CVE-2023-39809" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.