{"id":"CVE-2019-5176","aliases":["EUVD-2019-14781","GHSA-mp93-g9m9-rwh8"],"status":"published","title":"An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service ...","description":"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":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00526,"percentile":0.44809,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2020-03-11T23:24:58Z","modified":"2026-06-17T02:37:15Z","products":[{"vendor":"wago","product":"pfc200_firmware"},{"vendor":"wago","product":"wago pfc200"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963","tags":["x_refsource_MISC","x_transferred","Exploit","Mitigation","Technical Description","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-5176"},{"url":"https://github.com/advisories/GHSA-mp93-g9m9-rwh8"}],"sources":{"cve":[{"id":"CVE-2019-5176","description":"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.","status":"published","published":"2020-03-11T23:24:58Z","modified":"2024-08-04T19:47:56.814Z","updated_at":"2026-11-02T14:20:18.085548Z"}],"euvd":[{"id":"EUVD-2019-14781","description":"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.","status":"published","published":"2020-03-11T23:24:58Z","modified":"2024-08-04T19:47:56Z","updated_at":"2026-11-03T03:06:53.453369Z"}],"ghsa":[{"id":"GHSA-mp93-g9m9-rwh8","title":"An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service ...","description":"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.","status":"published","published":"2022-05-24T22:28:48Z","modified":"2023-01-30T05:06:12Z","updated_at":"2026-11-02T14:47:26.771464Z"}],"nvd":[{"id":"CVE-2019-5176","description":"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.","status":"published","published":"2020-03-12T00:15:18.163Z","modified":"2026-06-17T02:37:15.857Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:05:45.254119Z"}]}}