{"id":67975,"date":"2025-08-30T10:02:47","date_gmt":"2025-08-30T10:02:47","guid":{"rendered":""},"modified":"2025-09-16T11:36:46","modified_gmt":"2025-09-16T17:36:46","slug":"cve-2025-54462-heap-based-buffer-overflow-vulnerability-in-biosig-project","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54462-heap-based-buffer-overflow-vulnerability-in-biosig-project\/","title":{"rendered":"<strong>CVE-2025-54462: Heap-based Buffer Overflow Vulnerability in Biosig Project<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In this comprehensive review, we delve into CVE-2025-54462, a severe cybersecurity vulnerability that has been identified in the Nex parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch. This vulnerability, classified as a heap-based buffer overflow, is particularly significant due to its potential to allow an attacker to execute arbitrary code, leading to a potential system compromise or data leakage. As such, this vulnerability presents a substantial threat to any organizations or individuals using the affected versions of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55444-severe-sql-injection-vulnerability-in-online-artwork-and-fine-arts-mca-project-1-0\/\"  data-wpil-monitor-id=\"76719\">Biosig<\/a> Project.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-54462<br \/>\nSeverity: Critical (CVSS score 9.8)<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: Successful exploitation could lead to arbitrary code execution, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40741-stack-based-overflow-vulnerability-in-solid-edge-se2025-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"75739\">potential system<\/a> compromise, and data leakage.<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1896071619\" 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-2025-54480-critical-stack-based-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-3-9-0\/\"  data-wpil-monitor-id=\"83223\">Biosig Project libbiosig<\/a> | 3.9.0 and Master Branch (35a819fa)<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>A heap-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8822-stack-based-buffer-overflow-vulnerability-in-linksys-devices\/\"  data-wpil-monitor-id=\"75506\">buffer overflow vulnerability<\/a> occurs when a program writes more data to a buffer located on the heap than what&#8217;s allocated for it. This overflow can corrupt data, crash the program, or lead to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27577-arbitrary-code-execution-in-openharmony-via-race-condition-vulnerability\/\"  data-wpil-monitor-id=\"76244\">execution of malicious code<\/a>. In the case of CVE-2025-54462, a specially crafted .nex file can trigger this vulnerability, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3128-critical-vulnerability-in-mitsubishi-electric-smartrtu-allowing-remote-code-execution\/\"  data-wpil-monitor-id=\"76212\">allowing an attacker to execute arbitrary code<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-475692443\" 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 following hypothetical scenario. An attacker crafts a malicious .nex file designed to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8826-critical-buffer-overflow-vulnerability-in-linksys-wireless-range-extenders\/\"  data-wpil-monitor-id=\"75511\">overflow the buffer<\/a> in the affected Biosig Project software. The attacker then sends this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3671-critical-local-file-inclusion-vulnerability-in-wpgym-wordpress-gym-management-system-plugin\/\"  data-wpil-monitor-id=\"80531\">file to the target system<\/a>, either through an email attachment or other delivery methods. Once the target opens this file with the vulnerable software, the overflow is triggered, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52496-race-condition-in-mbed-tls-library-leads-to-potential-aes-key-extraction\/\"  data-wpil-monitor-id=\"76151\">potentially leading<\/a> to arbitrary code execution, as demonstrated in the pseudo-code below:<\/p>\n<pre><code class=\"\" data-line=\"\"># pseudo-code for the malicious .nex file\nbuffer = &#039;A&#039; * 1024  # creates a buffer with size greater than what&#039;s allocated\nfile = open(&#039;malicious.nex&#039;, &#039;w&#039;)  # opens a new .nex file\nfile.write(buffer)  # writes the buffer to the .nex file\nfile.close()  # closes the file<\/code><\/pre>\n<p>Note: This is a simplified representation of how the exploit might work. The actual exploit would likely involve more complex <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53415-remote-code-execution-vulnerability-in-delta-electronics-dtm-soft-project-file-parsing\/\"  data-wpil-monitor-id=\"79093\">code and interactions with the Biosig Project<\/a> software.<br \/>\nThis <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=\"75546\">vulnerability highlights the importance of proper input validation<\/a> and buffer management in software development. As a preventive measure, organizations are encouraged to apply the vendor patch or use WAF\/IDS as a temporary mitigation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In this comprehensive review, we delve into CVE-2025-54462, a severe cybersecurity vulnerability that has been identified in the Nex parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch. This vulnerability, classified as a heap-based buffer overflow, is particularly significant due to its potential to allow an attacker to execute arbitrary code, 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":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-67975","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67975","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=67975"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67975\/revisions"}],"predecessor-version":[{"id":75765,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67975\/revisions\/75765"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=67975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=67975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=67975"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=67975"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=67975"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=67975"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=67975"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=67975"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=67975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}