{"id":"CVE-2026-43856","aliases":["EUVD-2026-104857","GHSA-h92j-34q3-g4mj"],"status":"published","title":"A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a...","description":"A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code execution via a path longer than 1024 bytes.","severity":{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00656,"percentile":0.51763,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-10-20T09:16:28Z","modified":"2026-10-20T21:30:50Z","products":[{"vendor":"advantech","product":"adam-3600"}],"references":[{"url":"https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149"},{"url":"https://www.advantech.com/en/security-advisory","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43856"},{"url":"https://github.com/advisories/GHSA-h92j-34q3-g4mj"}],"sources":{"cve":[{"id":"CVE-2026-43856","description":"A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code execution via a path longer than 1024 bytes.","status":"published","published":"2026-10-20T09:16:28.132Z","modified":"2026-10-20T19:08:24.881Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T13:37:36.275898Z"}],"euvd":[{"id":"EUVD-2026-104857","description":"A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code execution via a path longer than 1024 bytes.","status":"published","published":"2026-10-20T09:16:28Z","modified":"2026-10-20T19:08:24Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:59:43.145678Z"}],"ghsa":[{"id":"GHSA-h92j-34q3-g4mj","title":"A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a...","description":"A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code execution via a path longer than 1024 bytes.","status":"published","published":"2026-10-20T12:31:33Z","modified":"2026-10-20T21:30:50Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:14:04.750771Z"}],"nvd":[{"id":"CVE-2026-43856","description":"A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code execution via a path longer than 1024 bytes.","status":"published","published":"2026-10-20T10:17:06.64Z","modified":"2026-10-20T19:30:59.91Z","cvss":[{"version":"4.0","score":8.6,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:13:01.161484Z"}]}}