{"id":67942,"date":"2025-08-30T08:02:08","date_gmt":"2025-08-30T08:02:08","guid":{"rendered":""},"modified":"2025-10-02T04:08:38","modified_gmt":"2025-10-02T10:08:38","slug":"cve-2025-53557-critical-heap-based-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53557-critical-heap-based-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig\/","title":{"rendered":"<strong>CVE-2025-53557: Critical Heap-Based Buffer Overflow Vulnerability in The Biosig Project libbiosig<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A severe vulnerability, dubbed CVE-2025-53557, has been identified in The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). This flaw, a heap-based buffer overflow vulnerability, could provide an attacker with the ability to execute arbitrary code on the system by merely delivering a maliciously crafted MFER file. As it impacts a widely utilized library, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52914-sql-injection-vulnerability-in-mitel-micollab-suite-applications-services\/\"  data-wpil-monitor-id=\"75679\">vulnerability carries serious implications for various software and applications<\/a> that make use of The Biosig Project libbiosig. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8011-high-severity-heap-corruption-vulnerability-in-google-chrome-v8\/\"  data-wpil-monitor-id=\"75626\">severity of this vulnerability<\/a> coupled with its potential for widespread impact makes it a critical issue that merits immediate attention and remediation.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-53557<br \/>\nSeverity: Critical (9.8 CVSS)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<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=\"75741\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1957992220\" 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=\"83212\">Biosig Project libbiosig<\/a> | 3.9.0 and Master Branch (35a819fa)<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability takes advantage of a flaw in the MFER parsing functionality 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=\"76714\">Biosig<\/a> Project libbiosig. By crafting a malicious MFER file, an attacker can cause a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53720-critical-heap-based-buffer-overflow-in-windows-rras\/\"  data-wpil-monitor-id=\"75389\">heap-based buffer overflow<\/a>, which in turn allows for the execution of arbitrary code. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27577-arbitrary-code-execution-in-openharmony-via-race-condition-vulnerability\/\"  data-wpil-monitor-id=\"76245\">code execution<\/a> could lead to a compromise of the system, along with the potential for data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-674982993\" 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 could be exploited. This pseudocode represents the crafting of a malicious MFER <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54689-high-risk-php-remote-file-inclusion-vulnerability-in-urna\/\"  data-wpil-monitor-id=\"76616\">file that could trigger the vulnerability<\/a> when parsed by the affected library.<\/p>\n<pre><code class=\"\" data-line=\"\"># Pseudocode\nmalicious_file = open(&quot;malicious.mfer&quot;, &quot;w&quot;)\nbuffer = &quot;A&quot; * 5000      # Buffer overflow with 5000 &#039;A&#039; characters\nmalicious_file.write(buffer)\nmalicious_file.close()<\/code><\/pre>\n<p>In this example, a file named &#8220;malicious.mfer&#8221; is created and filled with a large number of &#8216;A&#8217; characters. This large input causes a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47103-heap-based-buffer-overflow-vulnerability-in-indesign-desktop\/\"  data-wpil-monitor-id=\"75397\">buffer overflow<\/a> in the MFER parsing functionality, allowing the attacker to potentially execute arbitrary code.<br \/>\nRemember, the actual exploitation of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36901-critical-wlan-vulnerability-in-android-affecting-google-pixel-devices\/\"  data-wpil-monitor-id=\"87424\">vulnerability would depend on the specific implementation of the affected<\/a> library and the surrounding system environment.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate this vulnerability, users are advised to apply the vendor patch as soon as it becomes available. Until the patch can be applied, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as a temporary mitigation measure. It&#8217;s also recommended to limit the exposure of applications utilizing The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53518-an-integer-overflow-vulnerability-leading-to-arbitrary-code-execution-in-the-biosig-project-libbiosig\/\"  data-wpil-monitor-id=\"83233\">Biosig Project<\/a> libbiosig to untrusted networks wherever feasible.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A severe vulnerability, dubbed CVE-2025-53557, has been identified in The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). This flaw, a heap-based buffer overflow vulnerability, could provide an attacker with the ability to execute arbitrary code on the system by merely delivering a maliciously crafted MFER file. As it impacts a widely utilized library, [&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],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-67942","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67942","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=67942"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67942\/revisions"}],"predecessor-version":[{"id":80257,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/67942\/revisions\/80257"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=67942"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=67942"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=67942"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=67942"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=67942"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=67942"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=67942"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=67942"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=67942"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}