CVE-2019-5172Public exploit

Root command execution via unsanitized NTP cache values

Published Mar 11, 2020 · Updated Aug 4, 2024

OS command injection in WAGO PFC200 firmware 03.02.02(14) allows local users to execute arbitrary commands as root through I/O-Check. The ntp XML value is inserted with sprintf() into a config_sntp command without validation, then passed to system() by root-running iocheckd. Exploitation requires control of /tmp/iocheckCache.xml and a port 6626 save message; successful injection grants root command execution on the controller.

CVSS severity8.8
High
EPSS probability1.34%
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 WAGO PFC200 firmware 03.02.02(14) allows local users to execute arbitrary commands as root through I/O-Check. The ntp XML value is inserted with sprintf() into a config_sntp command without validation, then passed to system() by root-running iocheckd. Exploitation requires control of /tmp/iocheckCache.xml and a port 6626 save message; successful injection grants root command execution on the controller.

The record

CVE
CVE-2019-5172
Published
Mar 11, 2020
Updated
Aug 4, 2024
Vendor
WAGO
Product
WAGO PFC200
Classifications
CWE-78, T1059.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 11, 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=Firmware version 03.02.02(14)

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

WAGO · WAGO PFC200version=Firmware version 03.02.02(14)

Published CVSS scores

8.8Cisco TalosCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/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)
Vectorlocal
PrivilegesUnavailable
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

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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