{"id":85646,"date":"2025-11-09T15:08:45","date_gmt":"2025-11-09T15:08:45","guid":{"rendered":""},"modified":"2025-11-10T21:40:33","modified_gmt":"2025-11-11T03:40:33","slug":"cve-2025-58432-unauthorized-file-upload-vulnerability-in-zimaos","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-58432-unauthorized-file-upload-vulnerability-in-zimaos\/","title":{"rendered":"<strong>CVE-2025-58432: Unauthorized File Upload Vulnerability in ZimaOS<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>This report outlines a critical vulnerability found in ZimaOS, a fork of CasaOS, specifically used on Zima devices and x86-64 systems with UEFI. The vulnerability, designated as CVE-2025-58432, allows for unauthorized file upload from any user having access to localhost. Given its severity, the vulnerability poses a significant risk to system security, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49668-heap-based-buffer-overflow-in-windows-rras-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"92463\">potentially leading to system<\/a> compromise or data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-58432<br \/>\nSeverity: High (7.8\/10)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: System compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2846441469\" 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>ZimaOS | 1.4.1 and prior versions<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability lies in the \/v2_1\/files\/file\/uploadV2 endpoint of ZimaOS. This endpoint allows file uploads from any user who can access localhost. More importantly, these file uploads are performed with root privileges, bypassing the typical security measures in place. As such, an attacker could exploit this to upload malicious files or scripts, potentially leading to system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1444601891\" 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 this vulnerability might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/v2_1\/files\/file\/uploadV2 HTTP\/1.1\nHost: localhost\nContent-Type: application\/octet-stream\n{ &quot;file&quot;: &quot;&lt;malicious_file&gt;&quot;, &quot;filename&quot;: &quot;&lt;chosen_filename&gt;&quot; }<\/code><\/pre>\n<p>In the above example, an attacker could replace `<malicious_file>` and `<chosen_filename>` with a malicious file and a chosen filename, respectively, to exploit the vulnerability.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Users are advised to apply vendor patches as soon as they become available. In the interim, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These systems can monitor and block suspicious activity, helping to prevent the exploitation of this vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview This report outlines a critical vulnerability found in ZimaOS, a fork of CasaOS, specifically used on Zima devices and x86-64 systems with UEFI. The vulnerability, designated as CVE-2025-58432, allows for unauthorized file upload from any user having access to localhost. Given its severity, the vulnerability poses a significant risk to system security, potentially leading [&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-85646","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\/85646","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=85646"}],"version-history":[{"count":1,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85646\/revisions"}],"predecessor-version":[{"id":85744,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85646\/revisions\/85744"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=85646"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=85646"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=85646"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=85646"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=85646"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=85646"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=85646"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=85646"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=85646"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}