CVE-2021-41578
CVE-2021-41578 is a high-severity vulnerability in Myscada Mydesigner with a CVSS 3.x base score of 7.8. Its EPSS exploit-prediction score of 10% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 10% (95th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Myscada Mydesigner
- Published:
- Last modified:
Description
mySCADA myDESIGNER 8.20.0 and below allows Directory Traversal attacks when importing project files. If an attacker can trick a victim into importing a malicious mep file, then they gain the ability to write arbitrary files to OS locations where the user has permission. This would typically lead to code execution.
Frequently asked questions
- What is CVE-2021-41578?
- mySCADA myDESIGNER 8.20.0 and below allows Directory Traversal attacks when importing project files. If an attacker can trick a victim into importing a malicious mep file, then they gain the ability to write arbitrary files to OS locations where the user has permission. This would typically lead to code execution.
- How severe is CVE-2021-41578?
- CVE-2021-41578 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-41578 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-41578?
- CVE-2021-41578 affects Myscada Mydesigner. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-41578?
- 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-2021-41578 published?
- CVE-2021-41578 was published on 2021-10-04 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:myscada:mydesigner:*:*:*:*:*:*:*:*
More vulnerabilities in Myscada Mydesigner
- CVE-2021-43555 — High (CVSS 7.3): mySCADA myDESIGNER Versions 8.20.0 and prior fails to properly validate contents of an imported project file, which may…
All CVEs affecting Myscada Mydesigner →
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