{"id":79036,"date":"2025-09-28T17:43:49","date_gmt":"2025-09-28T17:43:49","guid":{"rendered":""},"modified":"2025-09-29T02:49:55","modified_gmt":"2025-09-29T08:49:55","slug":"cve-2025-40759-simatic-and-sinamics-software-vulnerability-leading-to-potential-system-compromise","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-40759-simatic-and-sinamics-software-vulnerability-leading-to-potential-system-compromise\/","title":{"rendered":"<strong>CVE-2025-40759: SIMATIC and SINAMICS Software Vulnerability Leading to Potential System Compromise<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is riddled with an ever-growing list of vulnerabilities that can potentially lead to system compromises and data leakage. One such vulnerability, identified as CVE-2025-40759, is noteworthy due to its widespread impact on a variety of SIMATIC and SINAMICS software versions. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-43115-improper-input-validation-vulnerability-in-apache-dolphinscheduler\/\"  data-wpil-monitor-id=\"86242\">vulnerability matters because it is rooted in the improper<\/a> sanitization of stored security properties during project file parsing, which could potentially allow an attacker to cause type confusion and execute arbitrary code within the affected application.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-40759<br \/>\nSeverity: High (7.8 CVSS Score)<br \/>\nAttack Vector: Local\/Remote<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: Potential <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54742-data-deserialization-vulnerability-in-wpevently-leading-to-possible-system-compromise\/\"  data-wpil-monitor-id=\"86355\">system compromise and data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3834252347\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p>SIMATIC S7-PLCSIM | All versions of V17, V18, V19 (versions < V19 Update 4), V20\nSIMATIC STEP 7 | All versions of V17, V18, V19 (versions < V19 Update 4), V20\nSIMATIC WinCC | All versions of V17, V18, V19 (versions < V19 Update 4), V20\nSIMOTION SCOUT TIA | All versions of V5.4, V5.5, V5.6 (versions < V5.6 SP1 HF7), V5.7\nSINAMICS Startdrive | All versions of V17, V18, V19, V20\nSIRIUS Safety ES | All versions of V17, V18, V19, V20 (TIA Portal)\nSIRIUS Soft Starter ES | All versions of V17, V18, V19, V20 (TIA Portal)\nTIA Portal Cloud | All versions of V17, V18, V19 (versions < V5.2.1.1), V20\n\n<strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of the improper sanitization of stored security properties when parsing project files in the affected software. An attacker with local or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53578-critical-php-remote-file-inclusion-vulnerability-in-gavias-kipso\/\"  data-wpil-monitor-id=\"86241\">remote access to the system can craft malicious project files<\/a> that, when parsed by the affected application, can cause type confusion. This confusion can subsequently be leveraged by the attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58163-remote-code-execution-vulnerability-in-freescout-help-desk-software\/\"  data-wpil-monitor-id=\"86327\">execute arbitrary code<\/a> within the software environment, potentially leading to system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p>\n<p>Given the nature of this vulnerability, a conceptual example might involve the crafting of a malicious project <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53204-php-remote-file-inclusion-vulnerability-in-ovatheme-eventlist\/\"  data-wpil-monitor-id=\"86288\">file that exploits the type confusion vulnerability<\/a>. Here&#8217;s an illustrative example, using pseudocode:<\/p><div id=\"ameeb-3501770515\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<pre><code class=\"\" data-line=\"\">project_file = open(&quot;malicious.proj&quot;, &quot;w&quot;)\nproject_file.write(&quot;{ &#039;security_properties&#039;: { &#039;$type&#039;: &#039;System.Management.Automation.PSObject, System.Management.Automation&#039;, &#039;properties&#039;: { &#039;malicious_payload&#039;: &#039;... arbitrary code ...&#039; } } }&quot;)\nproject_file.close()<\/code><\/pre>\n<p>In this example, the malicious project file contains a malicious payload that exploits the type confusion vulnerability, potentially leading to arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58176-remote-code-execution-vulnerability-in-dive-mcp-host-desktop-application\/\"  data-wpil-monitor-id=\"86334\">code execution<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is riddled with an ever-growing list of vulnerabilities that can potentially lead to system compromises and data leakage. One such vulnerability, identified as CVE-2025-40759, is noteworthy due to its widespread impact on a variety of SIMATIC and SINAMICS software versions. This vulnerability matters because it is rooted in the improper sanitization [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-79036","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/79036","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=79036"}],"version-history":[{"count":6,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/79036\/revisions"}],"predecessor-version":[{"id":79160,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/79036\/revisions\/79160"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=79036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=79036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=79036"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=79036"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=79036"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=79036"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=79036"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=79036"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=79036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}