{"id":82971,"date":"2025-10-16T21:43:27","date_gmt":"2025-10-16T21:43:27","guid":{"rendered":""},"modified":"2025-10-22T19:06:07","modified_gmt":"2025-10-23T01:06:07","slug":"cve-2025-54220-heap-based-buffer-overflow-vulnerability-in-incopy-versions-20-4-19-5-4-and-earlier","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54220-heap-based-buffer-overflow-vulnerability-in-incopy-versions-20-4-19-5-4-and-earlier\/","title":{"rendered":"<strong>CVE-2025-54220: Heap-based Buffer Overflow Vulnerability in InCopy Versions 20.4, 19.5.4 and Earlier<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The vulnerability CVE-2025-54220 is a critical heap-based buffer overflow vulnerability that affects certain versions of the popular desktop publishing software, InCopy. This vulnerability could potentially allow an attacker to execute arbitrary code in the context of the current user. The affected versions of InCopy are 20.4, 19.5.4 and earlier. This issue is especially significant because it could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-59352-critical-vulnerability-in-dragonfly-file-distribution-system-leading-to-potential-remote-code-execution-rce\/\"  data-wpil-monitor-id=\"90825\">lead to a system<\/a> compromise or data leakage if successfully exploited by an attacker, and it requires user interaction, namely the opening of a malicious file.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-54220<br \/>\nSeverity: High (7.8 CVSS Score)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7093-critical-vulnerability-in-belkin-f9k1122-1-00-33-impacting-system-security-and-data-integrity\/\"  data-wpil-monitor-id=\"91228\">System Compromise or Data<\/a> Leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-20738501\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p>InCopy | 20.4<br \/>\nInCopy | 19.5.4 and earlier<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of a heap-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9357-critical-buffer-overflow-vulnerability-in-linksys-routers\/\"  data-wpil-monitor-id=\"90843\">buffer overflow vulnerability<\/a> in the InCopy software. In this case, an attacker could craft a malicious file that, when opened in the affected versions of InCopy, overflows the buffer and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7848-memory-corruption-vulnerability-in-ni-labview-potentially-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"90462\">corrupts the heap memory<\/a>. This could allow the attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-59360-remote-code-execution-vulnerability-in-chaos-controller-manager\/\"  data-wpil-monitor-id=\"90114\">execute arbitrary code<\/a> in the context of the current user. The attacker&#8217;s <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-59340-jinjava-template-engine-vulnerability-leading-to-potential-remote-code-execution\/\"  data-wpil-monitor-id=\"90417\">code could potentially<\/a> take full control of the affected system, leading to a system compromise, or access sensitive data, resulting in data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3402149478\" 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 demonstrating how an attacker might craft a malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-10690-high-risk-unauthorized-file-upload-vulnerability-in-goza-nonprofit-charity-wordpress-theme\/\"  data-wpil-monitor-id=\"90191\">file to exploit this vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">#include &lt;stdio.h&gt;\n#include &lt;string.h&gt;\n#define BUFFER_SIZE 100\nint main() {\nchar buffer[BUFFER_SIZE];\nFILE *malicious_file;\nmalicious_file = fopen(&quot;malicious_file.icml&quot;, &quot;r&quot;);\nif (malicious_file == NULL) {\nprintf(&quot;Could not open file\\n&quot;);\nreturn 1;\n}\nfread(buffer, BUFFER_SIZE, 1, malicious_file);\nbuffer[BUFFER_SIZE - 1] = &#039;\\0&#039;;\nfclose(malicious_file);\n}<\/code><\/pre>\n<p>In the above example, the buffer size is defined as 100 bytes. If the content of the `malicious_file.icml` is larger than 100 bytes, it will overflow the buffer and corrupt the heap memory, possibly leading to arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-34195-remote-code-execution-vulnerability-in-vasion-print-virtual-appliance-host-and-application\/\"  data-wpil-monitor-id=\"90141\">code execution<\/a>.<br \/>\nPlease note that this is a simplified and conceptual example. Actual exploits would be more complex and require a deeper understanding of the software&#8217;s internal workings.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The vulnerability CVE-2025-54220 is a critical heap-based buffer overflow vulnerability that affects certain versions of the popular desktop publishing software, InCopy. This vulnerability could potentially allow an attacker to execute arbitrary code in the context of the current user. The affected versions of InCopy are 20.4, 19.5.4 and earlier. This issue is especially significant [&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-82971","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\/82971","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=82971"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/82971\/revisions"}],"predecessor-version":[{"id":84247,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/82971\/revisions\/84247"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=82971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=82971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=82971"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=82971"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=82971"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=82971"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=82971"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=82971"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=82971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}