CVE-2019-5176

5.5 mediumEPSS 0.5%

Medium (5.5) in wago pfc200 firmware. EPSS 0.5% chance of exploitation in the next 30 days.

An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of WAGO PFC 200 Firmware version 03.02.02(14). An attacker can send a specially crafted packet to trigger the parsing of this cache file.The destination buffer sp+0x40 is overflowed with the call to sprintf() for any gateway values that are greater than 512-len(‘/etc/config-tools/config_default_gateway number=0 state=enabled value=‘) in length. A gateway value of length 0x7e2 will cause the service to crash.

Severity

CVSS 3.1

5.5 medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2020-03-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

wago:pfc200_firmware

References

Check your stack JSON