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High severity7.8NVD Advisory· Published Mar 11, 2020· Updated Jun 17, 2026

CVE-2019-5166

CVE-2019-5166

Description

An exploitable stack buffer overflow vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of WAGO PFC 200 version 03.02.02(14). A specially crafted XML cache file written to a specific location on the device can cause a stack buffer overflow, resulting in code execution. An attacker can send a specially crafted packet to trigger the parsing of this cache file.

AI Insight

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Affected products

4
  • Wago/iocheckdllm-fuzzy
    Range: = 03.02.02(14)
  • Wago/Pfc200 Firmware2 versions
    cpe:2.3:o:wago:pfc200_firmware:03.02.02\(14\):*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:wago:pfc200_firmware:03.02.02\(14\):*:*:*:*:*:*:*
    • (no CPE)range: version 03.02.02(14)
  • Wago/PFC200llm-fuzzy
    Range: = 03.02.02(14)

Patches

Vulnerability mechanics

References

1

News mentions

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