How severe is CVE-2020-4066?

CVE-2020-4066 has a CVSS 3.x base score of 3.8, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-4066 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4066?

CVE-2020-4066 affects Limdu Project Limdu. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-4066?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-4066 published?

CVE-2020-4066 was published on 2020-06-22 and last updated on 2026-06-17.

CVE-2020-4066

CVE-2020-4066 is a low-severity vulnerability in Limdu Project Limdu with a CVSS 3.x base score of 3.8. 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-78.

Key facts

Severity: Low (CVSS 3.x base score 3.8)
CVSS v2: 9.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Limdu Project Limdu
Published: 2020-06-22
Last modified: 2026-06-17

Description

In Limdu before 0.95, the trainBatch function has a command injection vulnerability. Clients of the Limdu library are unlikely to be aware of this, so they might unwittingly write code that contains a vulnerability. This has been patched in 0.95.

Frequently asked questions

What is CVE-2020-4066?: In Limdu before 0.95, the trainBatch function has a command injection vulnerability. Clients of the Limdu library are unlikely to be aware of this, so they might unwittingly write code that contains a vulnerability. This has been patched in 0.95.
How severe is CVE-2020-4066?: CVE-2020-4066 has a CVSS 3.x base score of 3.8, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-4066 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4066?: CVE-2020-4066 affects Limdu Project Limdu. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-4066?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4066 published?: CVE-2020-4066 was published on 2020-06-22 and last updated on 2026-06-17.

References

https://github.com/erelsgl/limdu/security/advisories/GHSA-77qv-gh6f-pgh4

Affected products (1)

cpe:2.3:a:limdu_project:limdu:*:*:*:*:*:*:*:*

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