CVE-2020-12513Public exploitNetwork attack vector

Authenticated root command execution via unfiltered event code

Published Jan 22, 2021 · Updated Sep 16, 2024

OS command injection in Pepperl+Fuchs Comtrol IO-Link Master 1.5.48 and earlier allows remote authenticated users to execute commands as root. The IO-Link Test Event Generation endpoint appends the unfiltered code field to a command string passed to exec(). A valid web-interface session is required; successful injection runs with root privileges on the gateway operating system.

CVSS severity7.5
High
EPSS probability31.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Pepperl+Fuchs Comtrol IO-Link Master 1.5.48 and earlier allows remote authenticated users to execute commands as root. The IO-Link Test Event Generation endpoint appends the unfiltered code field to a command string passed to exec(). A valid web-interface session is required; successful injection runs with root privileges on the gateway operating system.

The record

CVE
CVE-2020-12513
Published
Jan 22, 2021
Updated
Sep 16, 2024
Vendor
Pepperl+Fuchs
Product
Comtrol IO-Link Master
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=unspecified <=1.5.48

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Pepperl+Fuchs · Comtrol IO-Link Masterversion=unspecified <=1.5.48

Published CVSS scores

7.5Pepperl+FuchsCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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')
T1059.004Unix Shell

Public exploit references

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Technologies

Your stack

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Your stack

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