CVE-2023-5826Public exploitNetwork attack vector

Database access via unescaped SessionId array

Published Oct 27, 2023 · Updated Aug 2, 2024

SQL injection in Netentsec NS-ASG Application Security Gateway 6.3 allows remote authenticated users to read or alter database data. The delete action in /admin/list_onlineuser.php iterates the SessionId array directly into an SQL statement without validation or escaping. A valid administrative PHP session is required, and crafted SessionId values can expose database information or change data handled by the query.

CVSS severity8.8
High
EPSS probability0.66%
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 Netentsec NS-ASG Application Security Gateway 6.3 allows remote authenticated users to read or alter database data. The delete action in /admin/list_onlineuser.php iterates the SessionId array directly into an SQL statement without validation or escaping. A valid administrative PHP session is required, and crafted SessionId values can expose database information or change data handled by the query.

The record

CVE
CVE-2023-5826
Published
Oct 27, 2023
Updated
Aug 2, 2024
Vendor
Netentsec
Product
NS-ASG Application Security Gateway
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Netentsec · NS-ASG Application Security Gatewayversion=6.3

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
5.2VulDBAV:A/AC:L/Au:S/C:P/I:P/A:P

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
Privilegesauthenticated
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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