{"id":58618,"date":"2025-07-09T13:14:04","date_gmt":"2025-07-09T13:14:04","guid":{"rendered":""},"modified":"2025-09-12T02:15:04","modified_gmt":"2025-09-12T08:15:04","slug":"cve-2025-43546-integer-underflow-vulnerability-in-bridge-versions-leading-to-arbitrary-code-execution","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-43546-integer-underflow-vulnerability-in-bridge-versions-leading-to-arbitrary-code-execution\/","title":{"rendered":"<strong>CVE-2025-43546: Integer Underflow Vulnerability in Bridge Versions Leading to Arbitrary Code Execution<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>This blog post talks about a serious vulnerability, CVE-2025-43546, affecting Bridge versions 15.0.3, 14.1.6 and earlier versions. This vulnerability, an Integer Underflow (Wrap or Wraparound) issue, poses a significant risk of arbitrary code execution in the context of the current user. This vulnerability is not merely a theoretical concern but has the potential to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52725-critical-deserialization-of-untrusted-data-vulnerability-in-couponxxl\/\"  data-wpil-monitor-id=\"65225\">lead<\/a> to system compromise or data leakage. The exploitation of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31279-critical-permission-issue-allowing-user-fingerprinting-in-macos-and-ipados\/\"  data-wpil-monitor-id=\"81916\">issue requires user<\/a> involvement, specifically, the victim must open a malicious file. Given the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32281-high-severity-missing-authorization-vulnerability-in-focuxtheme-wpkit-for-elementor\/\"  data-wpil-monitor-id=\"65285\">severity of the vulnerability<\/a> and the potential impact, it is crucial for organizations using Bridge to take immediate action to mitigate this threat.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-43546<br \/>\nSeverity: High (CVSS Score: 7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52717-sql-injection-vulnerability-in-lifterlms-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"65383\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2070364825\" 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>Bridge | 15.0.3 and earlier<br \/>\nBridge | 14.1.6 and earlier<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability arises from an Integer Underflow in Bridge, which can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-25214-race-condition-vulnerability-in-wwbn-avideo-14-4-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"67485\">lead to a wraparound condition<\/a>. This condition can, in turn, enable a malicious actor to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53002-remote-code-execution-vulnerability-in-llama-factory\/\"  data-wpil-monitor-id=\"65183\">execute arbitrary code<\/a> in the context of the current user. The attack is predicated on user interaction, meaning that the victim must open a malicious file for the exploit to occur. Once the file is opened, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46835-high-risk-vulnerability-in-git-gui-allows-unauthorized-file-overwrite\/\"  data-wpil-monitor-id=\"67486\">vulnerability is triggered and enables the attacker to gain unauthorized<\/a> access or control over the system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2227852899\" 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>The following is a<br \/>\n<strong>conceptual<\/strong><br \/>\n example of how this vulnerability might be exploited. This pseudocode shows the manipulation of an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30327-integer-overflow-vulnerability-in-incopy-leading-to-potential-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"73535\">integer value that leads<\/a> to underflow, potentially resulting in a wraparound and causing unexpected behavior in the system.<\/p>\n<pre><code class=\"\" data-line=\"\">int vulnerableFunction(int inputValue) {\nint buffer[10];\nint i = inputValue;\n\/\/ Underflow occurs if inputValue is less than 0\ni--;\n\/\/ Buffer overflow due to wraparound\nbuffer[i] = malicious_payload;\nreturn 0;\n}<\/code><\/pre>\n<p>In this hypothetical example, if `inputValue` is 0, the decrement operation causes an underflow, wrapping `i` to a large positive value. This leads to a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6752-critical-stack-based-buffer-overflow-vulnerability-in-linksys-routers\/\"  data-wpil-monitor-id=\"65176\">buffer overflow<\/a> when trying to assign `malicious_payload` to `buffer[i]`, potentially leading to arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5310-remote-code-execution-vulnerability-in-dover-fueling-solutions-progauge-maglink-lx-consoles\/\"  data-wpil-monitor-id=\"65513\">code execution<\/a>.<\/p>\n<p><strong>How to Mitigate the Vulnerability<\/strong><\/p>\n<p>The recommended mitigation for this vulnerability is to apply the vendor&#8217;s patch. In cases where immediate patching is not possible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52817-authorization-bypass-in-zealousweb-abandoned-contact-form-7-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"65720\">systems can potentially<\/a> identify and block attempts to exploit this vulnerability. However, they should not be seen as a long-term solution, and patching the affected software should be a priority.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview This blog post talks about a serious vulnerability, CVE-2025-43546, affecting Bridge versions 15.0.3, 14.1.6 and earlier versions. This vulnerability, an Integer Underflow (Wrap or Wraparound) issue, poses a significant risk of arbitrary code execution in the context of the current user. This vulnerability is not merely a theoretical concern but has the potential to [&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-58618","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\/58618","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=58618"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/58618\/revisions"}],"predecessor-version":[{"id":74377,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/58618\/revisions\/74377"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=58618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=58618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=58618"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=58618"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=58618"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=58618"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=58618"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=58618"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=58618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}