CVE-2020-4066Public exploitNetwork attack vector

Code execution via shell-interpreted training arguments

Published Jun 22, 2020 · Updated Aug 4, 2024

Command injection in Limdu before 0.95 allows attackers to execute operating-system commands through a client application using trainBatch. Affected classifier wrappers incorporate configurable training arguments into a command string passed to child_process.execSync, which interprets shell metacharacters. Exploitation requires a consuming application to pass attacker-controlled classifier options into trainBatch; injected commands run with that application's privileges.

CVSS severity7.2
High
EPSS probability1.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Limdu before 0.95 allows attackers to execute operating-system commands through a client application using trainBatch. Affected classifier wrappers incorporate configurable training arguments into a command string passed to child_process.execSync, which interprets shell metacharacters. Exploitation requires a consuming application to pass attacker-controlled classifier options into trainBatch; injected commands run with that application's privileges.

The record

CVE
CVE-2020-4066
Published
Jun 22, 2020
Updated
Aug 4, 2024
Vendor
Erel Segal-Halevi
Product
Limdu
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 22, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.95

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Erel Segal-Halevi · Limduversion=< 0.95

Published CVSS scores

9.0NIST NVDAV:N/AC:L/Au:S/C:C/I:C/A:C
7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

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Technologies

Your stack

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Your stack

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