How severe is CVE-2020-16234?

CVE-2020-16234 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-2020-16234 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-16234?

CVE-2020-16234 affects Fatek Winproladder. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-16234?

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-2020-16234 published?

CVE-2020-16234 was published on 2020-09-30 and last updated on 2026-06-17.

CVE-2020-16234

CVE-2020-16234 is a high-severity vulnerability in Fatek Winproladder with a CVSS 3.x base score of 7.8. 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-121
Affected product: Fatek Winproladder
Published: 2020-09-30
Last modified: 2026-06-17

Description

In PLC WinProladder Version 3.28 and prior, a stack-based buffer overflow vulnerability can be exploited when a valid user opens a specially crafted file, which may allow an attacker to remotely execute arbitrary code.

Frequently asked questions

What is CVE-2020-16234?: In PLC WinProladder Version 3.28 and prior, a stack-based buffer overflow vulnerability can be exploited when a valid user opens a specially crafted file, which may allow an attacker to remotely execute arbitrary code.
How severe is CVE-2020-16234?: CVE-2020-16234 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-2020-16234 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-16234?: CVE-2020-16234 affects Fatek Winproladder. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-16234?: 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-2020-16234 published?: CVE-2020-16234 was published on 2020-09-30 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-254-02

Affected products (1)

cpe:2.3:a:fatek:winproladder:*:*:*:*:*:*:*:*

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