CVE-2019-5171Public exploit

Local command execution via unescaped XML IP value

Published Mar 11, 2020 · Updated Aug 4, 2024

Command injection in WAGO PFC200 firmware 03.02.02(14) allows local users to execute arbitrary commands via a crafted XML cache file. iocheckd inserts the cache's ip node into a config_interfaces command with sprintf() and passes the resulting string to system() without neutralizing shell metacharacters. An attacker must write the globally writable cache file and send a BC_SaveParameter message, after which the injected command runs as root.

CVSS severity8.8
High
EPSS probability1.39%
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 WAGO PFC200 firmware 03.02.02(14) allows local users to execute arbitrary commands via a crafted XML cache file. iocheckd inserts the cache's ip node into a config_interfaces command with sprintf() and passes the resulting string to system() without neutralizing shell metacharacters. An attacker must write the globally writable cache file and send a BC_SaveParameter message, after which the injected command runs as root.

The record

CVE
CVE-2019-5171
Published
Mar 11, 2020
Updated
Aug 4, 2024
Vendor
WAGO
Product
WAGO PFC200
Classifications
CWE-78, T1059, T1068
Attack vector
local
Privileges
authenticated

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 privilegesauthenticated

What is affected?

WAGO · WAGO PFC200version=Firmware version 03.02.02(14)

Published CVSS scores

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

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
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
T1068Exploitation for Privilege Escalation

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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