CVE-2019-5167

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-03-11 · updated 2026-06-17
Weakness: CWE-78

Description

An exploitable command injection vulnerability exists in the iocheckd service ‘I/O-Check’ function of the WAGO PFC 200 version 03.02.02(14). At 0x1e3f0 the extracted dns value from the xml file is used as an argument to /etc/config-tools/edit_dns_server %s dns-server-nr=%d dns-server-name=<contents of dns node> using sprintf(). This command is later executed via a call to system(). This is done in a loop and there is no limit to how many dns entries will be parsed from the xml file.

Affected products

WAGO PFC200: 03.02.02(14)

References

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0962
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0962

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