{"id":"CVE-2025-40938","aliases":["EUVD-2025-201918","GHSA-6wrx-4m6w-9vw2"],"status":"published","title":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V4.0.1). The affected...","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.","severity":{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00404,"percentile":0.34906,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-798"],"published":"2025-12-09T10:44:36Z","modified":"2026-10-23T22:10:00Z","products":[{"vendor":"siemens","product":"simatic cn 4100"},{"vendor":"siemens","product":"simatic_cn_4100_firmware"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-416652.html","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40938"},{"url":"https://github.com/advisories/GHSA-6wrx-4m6w-9vw2"}],"sources":{"cve":[{"id":"CVE-2025-40938","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.","status":"published","published":"2025-12-09T10:44:36.883Z","modified":"2025-12-09T16:15:21.579Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-798"],"updated_at":"2026-11-02T14:32:34.434755Z"}],"euvd":[{"id":"EUVD-2025-201918","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.","status":"published","published":"2025-12-09T10:44:36Z","modified":"2025-12-09T16:15:21Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T19:49:08.049254Z"}],"ghsa":[{"id":"GHSA-6wrx-4m6w-9vw2","title":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V4.0.1). The affected...","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.","status":"published","published":"2025-12-09T18:30:36Z","modified":"2025-12-09T18:30:42Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/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":"critical"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-798"],"updated_at":"2026-11-02T15:05:06.487163Z"}],"nvd":[{"id":"CVE-2025-40938","description":"A vulnerability has been identified in SIMATIC CN 4100 (All versions \u003c V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.","status":"published","published":"2025-12-09T16:17:47.443Z","modified":"2026-10-23T22:10:00.16Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/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":"critical","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"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"}],"cwes":["CWE-798"],"updated_at":"2026-11-02T14:11:49.093461Z"}]}}