{"id":"CVE-2023-32737","aliases":["EUVD-2023-36962","GHSA-v9r2-vfw5-q6j9"],"status":"published","title":"A vulnerability has been identified in SIMATIC STEP 7 Safety V18 (All versions \u003c V18 Update 2)....","description":"A vulnerability has been identified in SIMATIC STEP 7 Safety V18 (All versions \u003c V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing user-controllable input. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.\r\n\r\nThis is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.","severity":{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00178,"percentile":0.07428,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2024-07-09T12:04:28Z","modified":"2026-06-17T05:59:29Z","products":[{"vendor":"siemens","product":"simatic step 7 safety v18"},{"vendor":"siemens","product":"simatic_step_7"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-313039.html","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-32737"},{"url":"https://github.com/advisories/GHSA-v9r2-vfw5-q6j9"}],"sources":{"cve":[{"id":"CVE-2023-32737","description":"A vulnerability has been identified in SIMATIC STEP 7 Safety V18 (All versions \u003c V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing user-controllable input. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.\r\n\r\nThis is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.","status":"published","published":"2024-07-09T12:04:28.195Z","modified":"2025-08-27T20:32:53.574Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:35:29.01154Z"}],"euvd":[{"id":"EUVD-2023-36962","description":"A vulnerability has been identified in SIMATIC STEP 7 Safety V18 (All versions \u003c V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing user-controllable input. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.\r\n\r\nThis is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.","status":"published","published":"2024-07-09T12:04:28Z","modified":"2025-08-27T20:32:53Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T20:31:51.141859Z"}],"ghsa":[{"id":"GHSA-v9r2-vfw5-q6j9","title":"A vulnerability has been identified in SIMATIC STEP 7 Safety V18 (All versions \u003c V18 Update 2)....","description":"A vulnerability has been identified in SIMATIC STEP 7 Safety V18 (All versions \u003c V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing user-controllable input. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.\n\nThis is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.","status":"published","published":"2024-07-09T12:30:57Z","modified":"2024-08-08T05:06:19Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium"},{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/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-502"],"updated_at":"2026-11-02T14:57:54.028208Z"}],"nvd":[{"id":"CVE-2023-32737","description":"A vulnerability has been identified in SIMATIC STEP 7 Safety V18 (All versions \u003c V18 Update 2). Affected applications do not properly restrict the .NET BinaryFormatter when deserializing user-controllable input. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.\r\n\r\nThis is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300.","status":"published","published":"2024-07-09T12:15:09.627Z","modified":"2026-06-17T05:59:29.227Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/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"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:09:17.205287Z"}]}}