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Smartptt ScadaApplication · Smartptt

CVE-2021-43939

HIGH · 8.8 CVSS v3.1 Published 2022-04-28
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Elcomplus SmartPTT is vulnerable when a low-authenticated user can access higher level administration authorization by issuing requests directly to the desired endpoints.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Elcomplus SmartPTT contains an Insecure Direct Object Reference (IDOR) vulnerability allowing authenticated users with low-level privileges to bypass authorization controls and access administrative functions by directly requesting higher-privilege endpoints. This represents a vertical privilege escalation where a low-authenticated user can obtain administrative access.

MitigationImplement proper role-based access control (RBAC) checks on all server-side endpoints and verify user privileges before executing any action, regardless of whether the user directly requests a protected resource.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Smartptt ScadaApplication
Affected:= 1.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify SmartPTT SCADA installation
    Check for SmartPTT SCADA software on the system by looking in installed programs, application directories, or running services related to SmartPTT
    Affected if SmartPTT SCADA version 1.1 is installed on the system
  2. Verify installed version
    Access the SmartPTT SCADA application or check system inventory to confirm the exact version number installed
    Affected if The installed version is exactly 1.1
  3. Confirm user authentication is enabled
    Check if user authentication is required to access SmartPTT SCADA by attempting to log in or reviewing authentication configuration settings
    Affected if User authentication is required and users can log in with low-level privileges
  4. Check for multiple user privilege roles
    Review user management settings or role configuration within SmartPTT SCADA to confirm multiple privilege levels exist (administrator, operator, viewer, etc.)
    Affected if The system has defined multiple user roles with different privilege levels
  5. Test for IDOR on admin endpoints
    Using a low-privilege authenticated account, attempt to directly request administrative endpoints or functions by modifying request parameters or URLs to access higher-privilege features
    Affected if Low-privilege users can access administrative functions by directly requesting protected endpoints

A user is affected if SmartPTT SCADA version 1.1 is installed, user authentication is enabled with multiple privilege roles, and low-privilege authenticated users can directly access administrative endpoints without proper authorization checks.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper role-based access control (RBAC) checks on all server-side endpoints and verify user privileges before executing any action, regardless of whether the user directly requests a protected resource.

Recommended fix Moderate confidence

Latest available SmartPTT SCADA release (contact vendor for specific version number)

  1. Contact Elcomplus technical support to obtain the latest patched version of SmartPTT SCADA
  2. Request information about security updates addressing CVE-2021-43939 and authorization bypass vulnerabilities
  3. Apply the vendor-provided patch or upgrade to the fixed release
  4. Verify that low-privilege users can no longer access admin endpoints after the update
  5. Review user role configurations and ensure proper authorization controls are in place
  6. Test all administrative functions with different privilege levels to confirm the fix

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Smartptt Scada Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-43939 in production — separate from our analysis above.

No notes yet

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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