CVE-2021-43939
CVE-2021-43939 is a high-severity vulnerability in Smartptt Smartptt Scada with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 9.0
- EPSS exploit prediction: 1% (44th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-285
- Affected product: Smartptt Smartptt Scada
- Published:
- Last modified:
Description
Elcomplus SmartPTT is vulnerable when a low-authenticated user can access higher level administration authorization by issuing requests directly to the desired endpoints.
Frequently asked questions
- What is CVE-2021-43939?
- Elcomplus SmartPTT is vulnerable when a low-authenticated user can access higher level administration authorization by issuing requests directly to the desired endpoints.
- How severe is CVE-2021-43939?
- CVE-2021-43939 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-43939 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-43939?
- CVE-2021-43939 affects Smartptt Smartptt Scada. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-43939?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-43939 published?
- CVE-2021-43939 was published on 2022-04-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:smartptt:smartptt_scada:1.1:*:*:*:*:*:*:*
More vulnerabilities in Smartptt Smartptt Scada
- CVE-2021-43934 — Critical (CVSS 9.8): Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate upload requests,…
- CVE-2021-43932 — Critical (CVSS 9.0): Elcomplus SmartPTT is vulnerable when an attacker injects JavaScript code into a specific parameter that can executed…
- CVE-2023-30459 — High (CVSS 7.2): SmartPTT SCADA 1.1.0.0 allows remote code execution (when the attacker has administrator privileges) by writing a…
- CVE-2021-43930 — Medium (CVSS 4.9): Elcomplus SmartPTT is vulnerable as the backup and restore system does not adequately validate download requests,…
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Other CWE-285 (Improper Authorization) vulnerabilities
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- CVE-2023-33189 — Critical (CVSS 10.0): Pomerium is an identity and context-aware access proxy. With specially crafted requests, incorrect authorization…
- CVE-2022-2595 — Critical (CVSS 10.0): Improper Authorization in GitHub repository kromitgmbh/titra prior to 0.79.1.
- CVE-2021-28799 — Critical (CVSS 10.0): An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If…
- CVE-2026-34048 — Critical (CVSS 9.9): Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to…
- CVE-2026-5412 — Critical (CVSS 9.9): In Juju versions prior to 2.9.57 and 3.6.21, an authorization issue exists in the Controller facade. An authenticated…
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