CVE-2021-43934

highpriority · track · 39EPSS 0.012 · 67 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.18% (67th) EPSS

CVSS 7.5 · high

Is it mine?

7 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-28

Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate upload requests, enabling a malicious user to potentially upload arbitrary files.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationSmartPTT SCADAcisa_csaf_ot
Elcomplus has released an update to fix these vulnerabilities and recommends users upgrade to Version 2.3.4 or later.
https://drive.google.com/drive/folders/1ovX1IdMKtVDnrBcSbKkY40e57Ib2bIex
MitigationSmartPTT SCADA Servercisa_csaf_ot
Elcomplus has released an update to fix these vulnerabilities and recommends users upgrade to Version 2.3.4 or later.
https://drive.google.com/drive/folders/1ovX1IdMKtVDnrBcSbKkY40e57Ib2bIex

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ics-cert@hq.dhs.gov USexploitability 3.9 · impact 5.9

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-434USCWE-434USCWE-434US

affected products (7)

Products and version ranges known to be affected.

SmartPTT SCADA Server: v1.4all versionscisa_csaf_otUS
SmartPTT SCADA: v1.1all versionscisa_csaf_otUS
Elcomplus LLC SmartPTT SCADAall versionscisa_csaf_otUS
Elcomplus LLC SmartPTT SCADA Serverall versionscisa_csaf_otUS
Elcomplus SmartPTT≤ 1.1enisa_euvdEU
Elcomplus SmartPTT SCADA Server≤ 2.3.4fstec_bduRU
smartptt smartptt scada= 1.1nvdUScpe:2.3:a:smartptt:smartptt_scada:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

ICSA-22-109-04Elcomplus SmartPTT SCADA2022-04-19icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could provide attackers a way to traverse the file system to access files or directories that are outside of the restricted directory; allow the upload or transfer files of dangerous types that can be automatically processed within the product's environment; allow an unauthorized access to an action or a resource; or allow a user to store dangerous data in a trusted database.
ICSA-22-109-05Elcomplus SmartPTT SCADA Server2022-04-19icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow an unauthorized user to store dangerous data in a trusted database; potentially exposing sensitive information; allow malicious users to upload arbitrary files; provide attackers a way to traverse the file system to access files or directories that are outside of the restricted directory; or result in exposure of data or unintended code execution.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cisa_csaf_ot nvd NVD CVE.org MITRE

published 2022-04-28modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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