{"id":67876,"date":"2025-08-30T06:01:16","date_gmt":"2025-08-30T06:01:16","guid":{"rendered":""},"modified":"2025-09-16T11:36:45","modified_gmt":"2025-09-16T17:36:45","slug":"cve-2025-53511-heap-based-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53511-heap-based-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig\/","title":{"rendered":"<strong>CVE-2025-53511: Heap-based Buffer Overflow Vulnerability in The Biosig Project libbiosig<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability, CVE-2025-53511, has been identified in The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). This vulnerability poses a significant threat to any system utilizing the affected software, as it can lead to arbitrary code execution, potentially compromising the entire system or resulting in data leakage. Organizations and individuals that utilize The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8913-critical-local-file-inclusion-vulnerability-in-wellchoose-s-organization-portal-system\/\"  data-wpil-monitor-id=\"82421\">Biosig Project<\/a> libbiosig are strongly advised to understand the implications of this vulnerability, apply the necessary mitigations, and monitor their systems for any suspicious activity.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-53511<br \/>\nSeverity: Critical (9.8 \/ 10)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <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=\"75742\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3900724495\" 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>The <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=\"83219\">Biosig Project libbiosig<\/a> | 3.9.0, Master Branch (35a819fa)<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The CVE-2025-53511 <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=\"76715\">vulnerability lies in the MFER parsing functionality of The Biosig<\/a> Project libbiosig. A heap-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9006-critical-remote-buffer-overflow-vulnerability-in-tenda-ch22-1-0-0-1\/\"  data-wpil-monitor-id=\"75372\">buffer overflow<\/a> condition occurs when the software writes more data to a buffer located in the heap than it can hold. This can cause the overflow of adjacent memory spaces, corrupting <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=\"75558\">valid data or leading<\/a> to execution of arbitrary code. An attacker can exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49693-a-deep-dive-into-double-free-vulnerability-in-microsoft-brokering-file-system\/\"  data-wpil-monitor-id=\"75323\">vulnerability by providing a specially crafted MFER file<\/a> that takes advantage of the buffer overflow to inject malicious code.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2447916759\" 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 vulnerability might be exploited. The attacker creates a malicious MFER file with an oversized payload that <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53720-critical-heap-based-buffer-overflow-in-windows-rras\/\"  data-wpil-monitor-id=\"75390\">overflows the buffer<\/a>.<\/p>\n<pre><code class=\"\" data-line=\"\">MFER File\n---------\nHEADER\nDATA: [oversized data payload]<\/code><\/pre>\n<p>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=\"80532\">file to the target system<\/a>, tricking the user into opening it with libbiosig. On opening, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47103-heap-based-buffer-overflow-vulnerability-in-indesign-desktop\/\"  data-wpil-monitor-id=\"75398\">buffer overflow<\/a> occurs, allowing the attacker&#8217;s code to be executed.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>The most effective way to counter this vulnerability is by applying the vendor-supplied patch. If a patch is not immediately available or cannot be applied right away, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8059-critical-privilege-escalation-vulnerability-in-b-blocks-wordpress-plugin\/\"  data-wpil-monitor-id=\"76525\">blocking or alerting on any attempts to exploit this vulnerability<\/a>.<br \/>\nIt is also advisable to practice good cyber hygiene, such as not opening <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6076-unsanitized-file-upload-vulnerability-in-partner-software-applications\/\"  data-wpil-monitor-id=\"82120\">files from untrusted sources and keeping all software<\/a> up-to-date, to further reduce the risk of exploitation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability, CVE-2025-53511, has been identified in The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). This vulnerability poses a significant threat to any system utilizing the affected software, as it can lead to arbitrary code execution, potentially compromising the entire system or resulting in data leakage. Organizations and individuals that utilize The [&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-67876","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\/67876","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=67876"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67876\/revisions"}],"predecessor-version":[{"id":75761,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67876\/revisions\/75761"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=67876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=67876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=67876"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=67876"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=67876"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=67876"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=67876"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=67876"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=67876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}