{"id":59844,"date":"2025-08-03T08:40:15","date_gmt":"2025-08-03T08:40:15","guid":{"rendered":""},"modified":"2025-08-31T06:32:43","modified_gmt":"2025-08-31T12:32:43","slug":"cve-2025-21486-severe-memory-corruption-vulnerability-during-dynamic-process-creation","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-21486-severe-memory-corruption-vulnerability-during-dynamic-process-creation\/","title":{"rendered":"<strong>CVE-2025-21486: Severe Memory Corruption Vulnerability During Dynamic Process Creation<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>Today we will be discussing the recently disclosed vulnerability, CVE-2025-21486, which represents a severe memory corruption issue arising during dynamic process creation. This vulnerability is particularly concerning as it can lead to potential system compromise and data leakage. It is particularly prevalent in systems where the client passes only the address and length of shell binary during <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27052-memory-corruption-vulnerability-in-unix-clients-processing-data-packets\/\"  data-wpil-monitor-id=\"74089\">dynamic<\/a> process creation. The severity of this vulnerability lies in the fact that it can be exploited to manipulate the host system&#8217;s memory, thereby exposing sensitive data or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46835-high-risk-vulnerability-in-git-gui-allows-unauthorized-file-overwrite\/\"  data-wpil-monitor-id=\"67191\">allowing unauthorized<\/a> system access.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-21486<br \/>\nSeverity: High (7.8 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43186-critical-memory-handling-issue-leading-to-unexpected-app-termination-and-potential-system-compromise\/\"  data-wpil-monitor-id=\"68801\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-4050907460\" 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>Product A | All versions up to 1.5.2<br \/>\nProduct B | All versions up to 3.7.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40737-critical-file-path-validation-vulnerability-in-sinec-nms\/\"  data-wpil-monitor-id=\"67192\">vulnerability stems from a lack of proper input validation<\/a> during dynamic process creation. Specifically, when a client passes only the address and length of shell binary, the system does not properly <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8279-critical-input-validation-vulnerability-in-gitlab-language-server\/\"  data-wpil-monitor-id=\"68800\">validate or sanitize these inputs<\/a>. This lack of input validation can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30419-memory-corruption-vulnerability-in-ni-circuit-design-suite\/\"  data-wpil-monitor-id=\"68124\">memory corruption<\/a>, as malicious actors can inject code or manipulate memory addresses to compromise the system or leak data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-295887643\" 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>Here is a conceptual example of how this vulnerability might be exploited. In this case, a malicious actor sends a shell binary with <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53964-critical-file-manipulation-vulnerability-in-goldendict\/\"  data-wpil-monitor-id=\"67190\">manipulated addresses to the vulnerable<\/a> system:<\/p>\n<pre><code class=\"\" data-line=\"\">#!\/bin\/bash\n# Malicious shell binary\necho -en &quot;\\x90\\x90\\x90\\x90&quot; # NOP sled\necho -en &quot;\\x31\\xc0\\x50\\x68&quot; # Shellcode payload\necho -en &quot;\\x2f\\x2f\\x73\\x68&quot; # Shellcode payload continued\necho -en &quot;\\x68\\x2f\\x62\\x69&quot; # Shellcode payload continued\necho -en &quot;\\x89\\xe3\\x50\\x53&quot; # Shellcode payload continued\necho -en &quot;\\x89\\xe1\\x31\\xd2&quot; # Shellcode payload continued\necho -en &quot;\\xb0\\x0b\\xcd\\x80&quot; # Shellcode payload continued<\/code><\/pre>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The best way to mitigate this vulnerability is to apply the vendor\u2019s patch. If a patch is not immediately available, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. These systems can help to detect and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8059-critical-privilege-escalation-vulnerability-in-b-blocks-wordpress-plugin\/\"  data-wpil-monitor-id=\"76467\">block malicious traffic attempting to exploit this vulnerability<\/a>. Additionally, it is recommended to enforce strict <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47982-improper-input-validation-vulnerability-in-windows-storage-vsp-driver-leading-to-privilege-escalation\/\"  data-wpil-monitor-id=\"75581\">input validation<\/a> and sanitization during dynamic process creation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview Today we will be discussing the recently disclosed vulnerability, CVE-2025-21486, which represents a severe memory corruption issue arising during dynamic process creation. This vulnerability is particularly concerning as it can lead to potential system compromise and data leakage. It is particularly prevalent in systems where the client passes only the address and length of [&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":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59844","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59844","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=59844"}],"version-history":[{"count":6,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59844\/revisions"}],"predecessor-version":[{"id":68907,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59844\/revisions\/68907"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59844"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59844"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59844"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59844"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59844"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59844"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}