CVE-2023-39809
CVE-2023-39809 is a critical-severity vulnerability in Nvki Intelligent Broadband Subscriber Gateway with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 2% (74th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-77
- Affected product: Nvki Intelligent Broadband Subscriber Gateway
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2023-39809?
- 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.
- How severe is CVE-2023-39809?
- CVE-2023-39809 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-39809 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-39809?
- CVE-2023-39809 affects Nvki Intelligent Broadband Subscriber Gateway. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-39809?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2023-39809 published?
- CVE-2023-39809 was published on 2023-08-21 and last updated on 2026-07-05.
References
Affected products (1)
- cpe:2.3:a:nvki:intelligent_broadband_subscriber_gateway:3.5:*:*:*:*:*:*:*
More vulnerabilities in Nvki Intelligent Broadband Subscriber Gateway
- CVE-2023-39808 — Critical (CVSS 9.8): N.V.K.INTER CO., LTD. (NVK) iBSG v3.5 was discovered to contain a hardcoded root password that allows attackers to…
- CVE-2023-39807 — Critical (CVSS 9.8): N.V.K.INTER CO., LTD. (NVK) iBSG v3.5 was discovered to contain a SQL injection vulnerability via the a_passwd…
All CVEs affecting Nvki Intelligent Broadband Subscriber Gateway →
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