CVE-2021-43938Network attack vector

Unauthenticated file disclosure via missing authorization

Published Apr 29, 2022 · Updated Apr 16, 2025

Information exposure in Elcomplus SmartPTT SCADA Server 1.4 allows remote attackers to retrieve server files without authentication. The file-request handling returns requested files without authentication or authorization, but public records do not identify the affected endpoint or request parameter. Network access to the SCADA web service is sufficient; disclosed file contents can expose sensitive server data, while further effects are not documented.

CVSS severity8.1
High
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Elcomplus SmartPTT SCADA Server 1.4 allows remote attackers to retrieve server files without authentication. The file-request handling returns requested files without authentication or authorization, but public records do not identify the affected endpoint or request parameter. Network access to the SCADA web service is sufficient; disclosed file contents can expose sensitive server data, while further effects are not documented.

The record

CVE
CVE-2021-43938
Published
Apr 29, 2022
Updated
Apr 16, 2025
Vendor
Elcomplus, Inc.
Product
SmartPTT SCADA Server
Classifications
CWE-200, CWE-862, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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=1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Elcomplus, Inc. · SmartPTT SCADA Serverversion=1.4

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1ICS-CERTCVSS:3.1/AV:N/AC:H/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-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-862Missing Authorization
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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