CVE-2023-40850Network attack vector

Unauthenticated application source-code disclosure

Published Sep 13, 2023 · Updated Sep 26, 2024

Improper access control in Netentsec NS-ASG 6.3 allows remote attackers to read files containing application website source code. The public CVE record does not identify the exposed path, file-selection logic, or missing authorization check that serves the files. No authentication or user interaction is required, and the documented effect is source-code disclosure without data modification or service interruption.

CVSS severity7.5
High
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Netentsec NS-ASG 6.3 allows remote attackers to read files containing application website source code. The public CVE record does not identify the exposed path, file-selection logic, or missing authorization check that serves the files. No authentication or user interaction is required, and the documented effect is source-code disclosure without data modification or service interruption.

The record

CVE
CVE-2023-40850
Published
Sep 13, 2023
Updated
Sep 26, 2024
Vendor
Netentsec
Product
NS-ASG Application Security Gateway
Classifications
CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 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 privilegesunauthenticated

What is affected?

Netentsec · NS-ASG Application Security Gatewayversion=6.3

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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