{"id":58805,"date":"2025-07-10T02:20:28","date_gmt":"2025-07-10T02:20:28","guid":{"rendered":""},"modified":"2025-10-26T04:20:13","modified_gmt":"2025-10-26T10:20:13","slug":"cve-2025-43570-use-after-free-vulnerability-in-substance3d-stager","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-43570-use-after-free-vulnerability-in-substance3d-stager\/","title":{"rendered":"<strong>CVE-2025-43570: Use After Free Vulnerability in Substance3D &#8211; Stager<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity world is currently dealing with an alarming vulnerability identified as CVE-2025-43570. This flaw lies within Substance3D &#8211; Stager versions 3.1.1 and earlier, and could potentially lead to unauthorized arbitrary code execution. The exploitation of this vulnerability, if successful, could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30404-integer-overflow-vulnerability-in-executorch-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"75967\">result in the compromise of a system<\/a> or a data leak. This presents a significant threat to users and organizations that utilize the affected software, as it allows malicious actors to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5310-remote-code-execution-vulnerability-in-dover-fueling-solutions-progauge-maglink-lx-consoles\/\"  data-wpil-monitor-id=\"65647\">execute arbitrary code<\/a> in the context of the current user.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-43570<br \/>\nSeverity: High (CVSS: 7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: System compromise or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53495-unauthorized-access-data-leakage-in-wikimedia-foundation-mediawiki-abusefilter-extension\/\"  data-wpil-monitor-id=\"72544\">data leakage<\/a><\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2233905708\" 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><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43571-use-after-free-vulnerability-in-substance3d-stager-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"91533\">Substance3D &#8211; Stager<\/a> | 3.1.1 and earlier<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The CVE-2025-43570 vulnerability is a Use After Free (UAF) <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53145-type-confusion-vulnerability-in-windows-message-queuing-allowing-remote-code-execution\/\"  data-wpil-monitor-id=\"78204\">type of vulnerability<\/a>. In this case, a specific object in memory is prematurely freed, but later, a malicious file is <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21486-severe-memory-corruption-vulnerability-during-dynamic-process-creation\/\"  data-wpil-monitor-id=\"71527\">processed which still references this deallocated memory<\/a>. This allows an attacker to exploit this condition to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50460-remote-code-execution-vulnerability-in-ms-swift-project\/\"  data-wpil-monitor-id=\"71528\">execute arbitrary code<\/a> in the context of the current user.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1795649181\" 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<p>To understand this vulnerability, consider the following conceptual example. This is not an actual exploit code but a simplified representation of how the attack would take place:<\/p>\n<pre><code class=\"\" data-line=\"\">\/\/ A simplified conceptual representation of the UAF vulnerability\n#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\nint main() {\nchar* pointer = (char*) malloc(10); \/\/ allocate memory\nfree(pointer); \/\/ free the memory prematurely\n\/\/ A malicious file could overwrite the freed memory with arbitrary code\npointer = &quot;malicious_code&quot;;\n\/\/ The program then accesses the freed memory\nprintf(&quot;%s\\n&quot;, pointer); \/\/ arbitrary code execution\n}<\/code><\/pre>\n<p>In this example, after the memory pointed by `pointer` is freed, a malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6755-wordpress-plugin-vulnerability-leads-to-arbitrary-file-deletion\/\"  data-wpil-monitor-id=\"65646\">file overwrites it with arbitrary<\/a> code. When the program attempts to access the freed memory, it inadvertently <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50754-stored-cross-site-scripting-xss-vulnerability-leading-to-remote-code-execution-in-unisite-cms-5-0\/\"  data-wpil-monitor-id=\"74682\">executes the malicious code<\/a>.<\/p>\n<p><strong>How to Mitigate<\/strong><\/p>\n<p>The best way to mitigate this vulnerability is by applying a vendor patch. In case the patch is not immediately available, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can help <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-36326-bypassing-amd-romarmor-protections-to-compromise-system-security\/\"  data-wpil-monitor-id=\"87897\">protect your system<\/a> temporarily. It is crucial to note that these are only temporary measures, and a permanent fix should be applied as soon as it becomes available from the vendor. In the meantime, it is also recommended not to open files from untrusted or unknown <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40920-weak-cryptographic-source-in-data-uuid-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"79860\">sources to prevent potential<\/a> exploitation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity world is currently dealing with an alarming vulnerability identified as CVE-2025-43570. This flaw lies within Substance3D &#8211; Stager versions 3.1.1 and earlier, and could potentially lead to unauthorized arbitrary code execution. The exploitation of this vulnerability, if successful, could result in the compromise of a system or a data leak. This presents [&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-58805","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\/58805","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=58805"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/58805\/revisions"}],"predecessor-version":[{"id":84675,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/58805\/revisions\/84675"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=58805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=58805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=58805"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=58805"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=58805"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=58805"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=58805"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=58805"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=58805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}