CVE-2023-39807Public exploitNetwork attack vector

Administrator credential disclosure via blind SQL injection

Published Aug 21, 2023 · Updated Jul 9, 2026

SQL injection in NVK iBSG 3.5 allows remote attackers to read administrator usernames and unhashed passwords through an HTTP request. The unauthenticated /portal/user-register.php endpoint incorporates the a_passwd POST parameter into a database query without effective neutralization, enabling time-based blind extraction. Exposure of the web interface permits extraction of the admin table's a_login and a_passwd columns, while direct data modification was not demonstrated.

CVSS severity9.8
Critical
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in NVK iBSG 3.5 allows remote attackers to read administrator usernames and unhashed passwords through an HTTP request. The unauthenticated /portal/user-register.php endpoint incorporates the a_passwd POST parameter into a database query without effective neutralization, enabling time-based blind extraction. Exposure of the web interface permits extraction of the admin table's a_login and a_passwd columns, while direct data modification was not demonstrated.

The record

CVE
CVE-2023-39807
Published
Aug 21, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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