{"id":68228,"date":"2025-08-30T19:05:59","date_gmt":"2025-08-30T19:05:59","guid":{"rendered":""},"modified":"2025-09-28T06:48:28","modified_gmt":"2025-09-28T12:48:28","slug":"cve-2025-54488-stack-based-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-3-9-0-and-master-branch","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54488-stack-based-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-3-9-0-and-master-branch\/","title":{"rendered":"<strong>CVE-2025-54488: Stack-based Buffer Overflow Vulnerability in The Biosig Project libbiosig 3.9.0 and Master Branch<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The Biosig Project libbiosig has encountered a severe vulnerability in its MFER parsing functionality. This stack-based buffer overflow flaw, known as CVE-2025-54488, is a critical cybersecurity issue that affects libbiosig 3.9.0 and the Master Branch (35a819fa). The vulnerability has the potential to affect a wide range of systems and applications that utilize the <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=\"76150\">libbiosig<\/a> library for their operation, making it a significant concern for many organizations.<br \/>\nThe exploitation of this vulnerability can lead to arbitrary code execution, which can <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=\"75731\">potentially lead to system<\/a> compromise or data leakage. This is why understanding and mitigating this threat is crucial, as it can have severe consequences for the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-46917-critical-integrity-validation-vulnerability-in-diebold-nixdorf-vynamic-security-suite\/\"  data-wpil-monitor-id=\"86098\">security and integrity<\/a> of information systems.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-54488<br \/>\nSeverity: Critical, CVSS score of 9.8<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: Arbitrary code execution, leading to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30404-integer-overflow-vulnerability-in-executorch-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"75943\">potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2920268535\" 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=\"83206\">Biosig Project libbiosig<\/a> | 3.9.0, Master Branch (35a819fa)<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit works by taking advantage of a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41388-stack-based-buffer-overflow-vulnerability-in-fuji-electric-smart-editor\/\"  data-wpil-monitor-id=\"75717\">buffer overflow vulnerability<\/a> in the MFER parsing functionality of The Biosig Project libbiosig. When the parsing function encounters a specific MFER file, which has been maliciously crafted by an attacker, a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9007-critical-buffer-overflow-vulnerability-in-tenda-ch22-1-0-0-1\/\"  data-wpil-monitor-id=\"76536\">buffer overflow<\/a> condition is triggered. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27577-arbitrary-code-execution-in-openharmony-via-race-condition-vulnerability\/\"  data-wpil-monitor-id=\"76231\">condition can then be leveraged to execute arbitrary code<\/a> on the affected system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1446885213\" 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. It assumes that an attacker can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55746-unauthenticated-file-manipulation-vulnerability-in-directus\/\"  data-wpil-monitor-id=\"78737\">manipulate the MFER file<\/a> that is being parsed by the libbiosig library:<\/p>\n<pre><code class=\"\" data-line=\"\">#include &lt;stdio.h&gt;\n#include &lt;string.h&gt;\nchar malicious_code[] = &quot;malicious code here&quot;;\nvoid trigger_vulnerability(char *input) {\nchar buf[8];\nstrcpy(buf, input);\n}\nint main() {\ntrigger_vulnerability(malicious_code);\nreturn 0;\n}<\/code><\/pre>\n<p>In this example, the malicious_code string is longer than the buffer can handle, triggering a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54351-buffer-overflow-vulnerability-in-iperf\/\"  data-wpil-monitor-id=\"77200\">buffer overflow<\/a> when the function `trigger_vulnerability` is called. This overflow can then be manipulated to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50707-critical-remote-code-execution-vulnerability-in-thinkphp3-v-3-2-5\/\"  data-wpil-monitor-id=\"76575\">execute arbitrary code<\/a>.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54689-high-risk-php-remote-file-inclusion-vulnerability-in-urna\/\"  data-wpil-monitor-id=\"76609\">risk associated with this vulnerability<\/a>, users are advised to apply the vendor patch as soon as it becomes available. Until the patch is applied, users can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as temporary mitigation measures. Regular patching and updating of systems are crucial to ensuring the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20133-remote-access-ssl-vpn-vulnerability-in-cisco-secure-firewall-asa-software-and-secure-ftd-software\/\"  data-wpil-monitor-id=\"76850\">security of systems against such vulnerabilities<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The Biosig Project libbiosig has encountered a severe vulnerability in its MFER parsing functionality. This stack-based buffer overflow flaw, known as CVE-2025-54488, is a critical cybersecurity issue that affects libbiosig 3.9.0 and the Master Branch (35a819fa). The vulnerability has the potential to affect a wide range of systems and applications that utilize the libbiosig [&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-68228","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\/68228","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=68228"}],"version-history":[{"count":13,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/68228\/revisions"}],"predecessor-version":[{"id":78890,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/68228\/revisions\/78890"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=68228"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=68228"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=68228"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=68228"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=68228"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=68228"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=68228"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=68228"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=68228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}