{"id":68161,"date":"2025-08-30T16:04:59","date_gmt":"2025-08-30T16:04:59","guid":{"rendered":""},"modified":"2025-09-16T11:36:42","modified_gmt":"2025-09-16T17:36:42","slug":"cve-2025-54485-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-opens-door-to-arbitrary-code-execution","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54485-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-opens-door-to-arbitrary-code-execution\/","title":{"rendered":"<strong>CVE-2025-54485: Buffer Overflow Vulnerability in The Biosig Project libbiosig Opens Door to Arbitrary Code Execution<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A severe vulnerability, tracked as CVE-2025-54485, has been identified in The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). This vulnerability is a stack-based buffer overflow that resides in the MFER parsing functionality of the software, opening a door for attackers to execute arbitrary code on the affected system. This <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=\"75732\">vulnerability can potentially impact any system<\/a> running the affected versions of libbiosig, posing significant threats to data confidentiality and system integrity.<br \/>\nGiven the high <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8880-high-severity-race-condition-vulnerability-in-v8-of-google-chrome\/\"  data-wpil-monitor-id=\"76144\">severity of this vulnerability<\/a>, with a CVSS score of 9.8, it is crucial for administrators and IT professionals to understand its implications, how it functions, and what mitigation steps can be taken.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-54485<br \/>\nSeverity: Critical (CVSS: 9.8)<br \/>\nAttack Vector: Local\/Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30404-integer-overflow-vulnerability-in-executorch-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"75945\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3334621555\" 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=\"83210\">Biosig Project libbiosig<\/a> | 3.9.0 and Master Branch (35a819fa)<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32412-unchecked-buffer-vulnerability-in-fuji-electric-smart-editor\/\"  data-wpil-monitor-id=\"75713\">vulnerability originates from a stack-based buffer<\/a> overflow in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). 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=\"75723\">buffer overflow<\/a> occurs when more data is written into a buffer than it can handle, which can corrupt data, crash the program, or lead to the execution of malicious code.<br \/>\nIn the case of CVE-2025-54485, a specially crafted MFER file can trigger the vulnerability, leading to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27577-arbitrary-code-execution-in-openharmony-via-race-condition-vulnerability\/\"  data-wpil-monitor-id=\"76218\">arbitrary code execution<\/a>. This vulnerability manifests on line 8785 of biosig.c on the current master branch (35a819fa), when the Tag is 8.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-4066306052\" 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>Here&#8217;s a conceptual example of how the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54689-high-risk-php-remote-file-inclusion-vulnerability-in-urna\/\"  data-wpil-monitor-id=\"76612\">vulnerability might be exploited using a malicious MFER file:<\/a><\/p>\n<pre><code class=\"\" data-line=\"\">$ .\/vulnerable_binary $(python -c &#039;print(&quot;A&quot;*250)&#039;) \/\/ where 250 is greater than the buffer size<\/code><\/pre>\n<p>This command would generate an MFER file with a payload of &#8220;A&#8221; characters repeated 250 times, which could cause 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=\"76537\">buffer overflow<\/a> if the buffer size is less than 250. This overflow could then <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3128-critical-vulnerability-in-mitsubishi-electric-smartrtu-allowing-remote-code-execution\/\"  data-wpil-monitor-id=\"76203\">allow the execution of arbitrary code<\/a>.<br \/>\nRemember, this is a simplified example and real-world exploits would likely involve more sophisticated techniques and custom payloads.<\/p>\n<p><strong>Recommended Mitigations<\/strong><\/p>\n<p>To mitigate this vulnerability, it is recommended to apply the vendor patch as soon as it becomes available. In the absence of a vendor patch, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation.<br \/>\nMoreover, it is advisable to always monitor incoming and outgoing network traffic for suspicious activities, and to follow best security practices such as limiting the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48799-privilege-escalation-vulnerability-in-windows-update-service\/\"  data-wpil-monitor-id=\"77833\">privileges of system processes and regularly updating<\/a> and patching all systems and software.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A severe vulnerability, tracked as CVE-2025-54485, has been identified in The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). This vulnerability is a stack-based buffer overflow that resides in the MFER parsing functionality of the software, opening a door for attackers to execute arbitrary code on the affected system. This vulnerability can potentially impact [&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-68161","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\/68161","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=68161"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/68161\/revisions"}],"predecessor-version":[{"id":75752,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/68161\/revisions\/75752"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=68161"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=68161"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=68161"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=68161"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=68161"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=68161"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=68161"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=68161"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=68161"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}