{"id":38859,"date":"2025-05-17T08:17:50","date_gmt":"2025-05-17T08:17:50","guid":{"rendered":""},"modified":"2025-09-08T04:18:56","modified_gmt":"2025-09-08T10:18:56","slug":"cve-2025-29509-critical-remote-code-execution-vulnerability-in-jan-v0-5-14","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-29509-critical-remote-code-execution-vulnerability-in-jan-v0-5-14\/","title":{"rendered":"<strong>CVE-2025-29509: Critical Remote Code Execution Vulnerability in Jan v0.5.14<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the ever-evolving cybersecurity landscape, the emergence of a new vulnerability known as CVE-2025-29509 has raised significant concern. This is a critical vulnerability affecting the popular communication platform Jan, specifically all versions up to and including v0.5.14. The flaw allows for remote <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49123-code-execution-vulnerability-in-solid-edge-se2023\/\"  data-wpil-monitor-id=\"43552\">code execution<\/a> (RCE) when a user clicks on a rendered link within a conversation. This vulnerability is of serious concern due to its <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4372-webaudio-heap-corruption-in-google-chrome-a-potential-gateway-to-system-compromise-and-data-leakage\/\"  data-wpil-monitor-id=\"43787\">potential to compromise systems or lead to data<\/a> leakage, thereby putting user data and system integrity at significant risk.<br \/>\nThe importance of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4335-privilege-escalation-vulnerability-in-woocommerce-multiple-addresses-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"43722\">addressing this vulnerability<\/a> cannot be overstated. The ability for a malicious actor to execute arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49132-a-critical-vulnerability-in-solid-edge-se2023-allowing-remote-code-execution\/\"  data-wpil-monitor-id=\"44118\">code on a victim&#8217;s system remotely<\/a> can have devastating consequences, potentially leading to unauthorized access to sensitive information, disruption of system functionality, and even full system takeover.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-29509<br \/>\nSeverity: Critical with a CVSS score of 8.8<br \/>\nAttack Vector: User interaction <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31246-kernel-memory-corruption-in-macos-via-malicious-afp-server\/\"  data-wpil-monitor-id=\"47777\">via a malicious<\/a> link<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49129-stack-overflow-vulnerability-in-solid-edge-se2023-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"43553\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2646216968\" 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>Jan | Up to and including v0.5.14<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/global-honeypot-creation-exploits-cisco-flaw-unmasking-the-vicioustrap-attack\/\"  data-wpil-monitor-id=\"50994\">exploit capitalizes on a flaw<\/a> in Jan&#8217;s handling of external website links within app conversations. More specifically, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49661-untrusted-pointer-dereference-vulnerability-in-windows-ancillary-function-driver-for-winsock\/\"  data-wpil-monitor-id=\"80409\">vulnerability lies in the &#8216;shell.openExternal()&#8217; function<\/a>, which is part of the ElectronAPI. This function is designed to open external websites from within the app. However, due to the lack of URL filtering when calling &#8216;shell.openExternal()&#8217;, a malicious actor can include <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-44022-arbitrary-code-execution-vulnerability-in-vvveb-cms-v-1-0-6\/\"  data-wpil-monitor-id=\"45348\">arbitrary code<\/a> within a specially crafted URL. When a user clicks on this URL within the Jan app, the code is executed, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4347-d-link-router-buffer-overflow-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"43576\">potentially leading to system<\/a> compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3768030972\" 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>Consider the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-23394-critical-unix-symbolic-link-following-vulnerability-in-opensuse-tumbleweed-cyrus-imapd\/\"  data-wpil-monitor-id=\"54401\">following conceptual example of how this vulnerability<\/a> might be exploited. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41645-unauthenticated-remote-attacker-hijacking-via-demo-account\/\"  data-wpil-monitor-id=\"49973\">attacker sends a malicious link via<\/a> the Jan messaging platform. This link contains the arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46193-remote-code-execution-vulnerability-in-sourcecodester-client-database-management-system-1-0\/\"  data-wpil-monitor-id=\"45284\">code to be executed<\/a>. Here is a simplified demonstration:<\/p>\n<pre><code class=\"\" data-line=\"\">GET \/malicious-url?payload=arbitrary_code HTTP\/1.1\nHost: attacker.example.com<\/code><\/pre>\n<p>When the user clicks on this link within the Jan app, the &#8216;shell.openExternal()&#8217; function is called with the provided URL, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-25014-prototype-pollution-vulnerability-in-kibana-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"44876\">leading to the execution of the arbitrary code<\/a> contained within the URL. This can result in unauthorized access, data leakage, or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30165-potential-system-compromise-in-vllm-v0-engine\/\"  data-wpil-monitor-id=\"44013\">system compromise<\/a>.<\/p>\n<p><strong>Remediation Guidance<\/strong><\/p>\n<p>To <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-49842-critical-memory-corruption-vulnerability-in-protected-vm-address-space\/\"  data-wpil-monitor-id=\"58871\">address this vulnerability<\/a>, users are advised to apply the vendor-released patch immediately. In the absence of a patch or for additional protection, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation, helping to detect and prevent exploitation attempts. Regularly monitoring and updating all <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20188-cisco-ios-xe-software-for-wireless-lan-controllers-security-vulnerability\/\"  data-wpil-monitor-id=\"44072\">software components is also essential to maintain a secure<\/a> IT environment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the ever-evolving cybersecurity landscape, the emergence of a new vulnerability known as CVE-2025-29509 has raised significant concern. This is a critical vulnerability affecting the popular communication platform Jan, specifically all versions up to and including v0.5.14. The flaw allows for remote code execution (RCE) when a user clicks on a rendered link within [&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-38859","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\/38859","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=38859"}],"version-history":[{"count":16,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38859\/revisions"}],"predecessor-version":[{"id":72832,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38859\/revisions\/72832"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=38859"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=38859"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=38859"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=38859"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=38859"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=38859"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=38859"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=38859"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=38859"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}