{"id":"CVE-2025-40937","title":"A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1)","summary":"A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application do not properly validate input parameters in its REST API, resulting in improper handling of unexpected arguments.\r\nThis could allow…","severity":"high","cvss":8.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","cwe":["CWE-77"],"vendor":"siemens","product":"simatic_cn_4100_firmware","affected":["simatic_cn_4100_firmware < 4.0.1"],"patched":["simatic_cn_4100_firmware 4.0.1"],"published":"2025-12-09","updated":"2026-10-07","sourceUpdated":"2026-10-07T20:10:01.970","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-40937","references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-416652.html","label":"productcert@siemens.com"}],"tags":["nvd"],"epss":0.00586,"epssPercentile":0.46225,"ingestedAt":"2026-10-07T20:46:46.791Z","slug":"CVE-2025-40937","body":"## Overview\n\nA vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application do not properly validate input parameters in its REST API, resulting in improper handling of unexpected arguments.\r\nThis could allow an authenticated attacker to execute arbitrary code with limited privileges.\n\n## Affected\n\n- `simatic_cn_4100_firmware < 4.0.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `simatic_cn_4100_firmware 4.0.1`","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":45.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}