CVE-2023-0839Network attack vector

Unauthenticated account discovery via exposed error signals

Published Mar 6, 2023 · Updated Jun 1, 2026

Improper error-message protection in İNS Yazılım inSCADA before 20230115-1 allows remote attackers to discover valid accounts over the network. The published record does not identify the affected endpoint or explain which response difference exposes account validity. No authentication or user interaction is required, and the documented consequence is limited to account footprinting because broader impacts are not technically explained.

CVSS severity9.8
Critical
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper error-message protection in İNS Yazılım inSCADA before 20230115-1 allows remote attackers to discover valid accounts over the network. The published record does not identify the affected endpoint or explain which response difference exposes account validity. No authentication or user interaction is required, and the documented consequence is limited to account footprinting because broader impacts are not technically explained.

The record

CVE
CVE-2023-0839
Published
Mar 6, 2023
Updated
Jun 1, 2026
Vendor
İNS Yazılım Sanayi ve Ticaret A.Ş.
Product
inSCADA
Classifications
CWE-1320, CAPEC-575, T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Jun 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <20230115-1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

İNS Yazılım Sanayi ve Ticaret A.Ş. · inSCADAversion=0 <20230115-1

Published CVSS scores

9.8Computer Emergency Response Team of the Republic of TurkeyCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-1320Improper Protection for Outbound Error Messages and Alert Signals
CAPEC-575Account Footprinting
T1087Account Discovery

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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