{"id":"CVE-2019-5074","aliases":["EUVD-2019-14679","GHSA-cc6m-vg7g-249c"],"status":"published","title":"An exploitable stack buffer overflow vulnerability exists in the iocheckd service ''I/O-Check''...","description":"An exploitable stack buffer overflow vulnerability exists in the iocheckd service ''I/O-Check'' functionality of WAGO PFC200 Firmware version 03.01.07(13), WAGO PFC200 Firmware version 03.00.39(12) and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a stack buffer overflow, resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0328,"percentile":0.8853,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120","CWE-787"],"published":"2019-12-18T19:30:27Z","modified":"2026-06-17T02:37:05Z","products":[{"vendor":"wago","product":"pfc_100_firmware"},{"vendor":"wago","product":"pfc_200_firmware"},{"vendor":"wago","product":"wago pfc200"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2019-0863","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-5074"},{"url":"https://github.com/advisories/GHSA-cc6m-vg7g-249c"}],"sources":{"cve":[{"id":"CVE-2019-5074","description":"An exploitable stack buffer overflow vulnerability exists in the iocheckd service ''I/O-Check'' functionality of WAGO PFC200 Firmware version 03.01.07(13), WAGO PFC200 Firmware version 03.00.39(12) and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a stack buffer overflow, resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.","status":"published","published":"2019-12-18T19:30:27Z","modified":"2024-08-04T19:47:55.643Z","updated_at":"2026-11-02T14:20:18.411291Z"}],"euvd":[{"id":"EUVD-2019-14679","description":"An exploitable stack buffer overflow vulnerability exists in the iocheckd service ''I/O-Check'' functionality of WAGO PFC200 Firmware version 03.01.07(13), WAGO PFC200 Firmware version 03.00.39(12) and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a stack buffer overflow, resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.","status":"published","published":"2019-12-18T19:30:27Z","modified":"2024-08-04T19:47:55Z","updated_at":"2026-11-03T03:06:53.888525Z"}],"ghsa":[{"id":"GHSA-cc6m-vg7g-249c","title":"An exploitable stack buffer overflow vulnerability exists in the iocheckd service ''I/O-Check''...","description":"An exploitable stack buffer overflow vulnerability exists in the iocheckd service ''I/O-Check'' functionality of WAGO PFC200 Firmware version 03.01.07(13), WAGO PFC200 Firmware version 03.00.39(12) and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a stack buffer overflow, resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.","status":"published","published":"2022-05-24T17:04:04Z","modified":"2023-01-29T05:00:45Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:44:39.355024Z"}],"nvd":[{"id":"CVE-2019-5074","description":"An exploitable stack buffer overflow vulnerability exists in the iocheckd service ''I/O-Check'' functionality of WAGO PFC200 Firmware version 03.01.07(13), WAGO PFC200 Firmware version 03.00.39(12) and WAGO PFC100 Firmware version 03.00.39(12). A specially crafted set of packets can cause a stack buffer overflow, resulting in code execution. An attacker can send unauthenticated packets to trigger this vulnerability.","status":"published","published":"2019-12-18T20:15:16.76Z","modified":"2026-06-17T02:37:05.283Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:05:40.856496Z"}]}}