CVE-2021-43937Network attack vector

Unauthorized web actions via request-origin validation failure

Published Apr 29, 2022 · Updated Apr 16, 2025

Cross-site request forgery in Elcomplus SmartPTT SCADA Server 1.4 allows attackers to submit unintended requests through its web application. The web application does not sufficiently verify that a well-formed request was intentionally submitted by the user whose session processes it. A victim session must process the attacker-induced request, but CISA has not published the affected endpoints, operations, or resulting data and control effects.

CVSS severity8.8
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Elcomplus SmartPTT SCADA Server 1.4 allows attackers to submit unintended requests through its web application. The web application does not sufficiently verify that a well-formed request was intentionally submitted by the user whose session processes it. A victim session must process the attacker-induced request, but CISA has not published the affected endpoints, operations, or resulting data and control effects.

The record

CVE
CVE-2021-43937
Published
Apr 29, 2022
Updated
Apr 16, 2025
Vendor
Elcomplus, Inc.
Product
SmartPTT SCADA Server
Classifications
CWE-352, CWE-200
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

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.6ICS-CERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

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-352Cross-Site Request Forgery (CSRF)
CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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