{"id":"CVE-2019-5178","aliases":["EUVD-2019-14783","GHSA-7cxx-87x4-wr3r"],"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+0x440 is overflowed with the call to sprintf() for any hostname values that are greater than 1024-len(‘/etc/config-tools/change_hostname hostname=‘) in length. A hostname value of length 0x3fd will cause the service to crash.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00656,"percentile":0.51701,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2020-03-11T23:25:15Z","modified":"2026-06-17T02:37:16Z","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","Technical Description","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-5178"},{"url":"https://github.com/advisories/GHSA-7cxx-87x4-wr3r"}],"sources":{"cve":[{"id":"CVE-2019-5178","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+0x440 is overflowed with the call to sprintf() for any hostname values that are greater than 1024-len(‘/etc/config-tools/change_hostname hostname=‘) in length. A hostname value of length 0x3fd will cause the service to crash.","status":"published","published":"2020-03-11T23:25:15Z","modified":"2024-08-04T19:47:56.734Z","updated_at":"2026-11-02T14:20:18.746972Z"}],"euvd":[{"id":"EUVD-2019-14783","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+0x440 is overflowed with the call to sprintf() for any hostname values that are greater than 1024-len(‘/etc/config-tools/change_hostname hostname=‘) in length. A hostname value of length 0x3fd will cause the service to crash.","status":"published","published":"2020-03-11T23:25:15Z","modified":"2024-08-04T19:47:56Z","updated_at":"2026-11-03T03:06:53.453369Z"}],"ghsa":[{"id":"GHSA-7cxx-87x4-wr3r","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+0x440 is overflowed with the call to sprintf() for any hostname values that are greater than 1024-len(‘/etc/config-tools/change_hostname hostname=‘) in length. A hostname value of length 0x3fd will cause the service to crash.","status":"published","published":"2022-05-24T22:28:22Z","modified":"2023-01-30T05:04:59Z","updated_at":"2026-11-02T14:47:10.51539Z"}],"nvd":[{"id":"CVE-2019-5178","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+0x440 is overflowed with the call to sprintf() for any hostname values that are greater than 1024-len(‘/etc/config-tools/change_hostname hostname=‘) in length. A hostname value of length 0x3fd will cause the service to crash.","status":"published","published":"2020-03-12T00:15:18.29Z","modified":"2026-06-17T02:37:16.05Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:05:45.254119Z"}]}}