CVE-2023-39807
CWE-89Published: August 21, 2023· Updated: Jul 9, 2026
Official Description
N.V.K.INTER CO., LTD. (NVK) iBSG v3.5 was discovered to contain a SQL injection vulnerability via the a_passwd parameter at /portal/user-register.php.
Risk Analysis
NVK iBSG v3.5 is susceptible to SQL injection via the a_passwd parameter during user registration. This critical flaw allows remote attackers to manipulate the database, presenting a severe security risk.
No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low complexity.
Update to a secure version of iBSG or apply patches to sanitize input on the registration page.
Technical Analysis
CVE-2023-39807 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Related CVEs (CWE-89)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-39807 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts