{"id":50460,"date":"2025-06-09T18:08:00","date_gmt":"2025-06-09T18:08:00","guid":{"rendered":""},"modified":"2025-07-09T23:06:56","modified_gmt":"2025-07-10T05:06:56","slug":"cve-2025-5503-critical-remote-buffer-overflow-vulnerability-in-totolink-x15","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5503-critical-remote-buffer-overflow-vulnerability-in-totolink-x15\/","title":{"rendered":"<strong>CVE-2025-5503: Critical Remote Buffer Overflow Vulnerability in TOTOLINK X15<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability, identified as CVE-2025-5503, has been discovered in TOTOLINK X15 1.0.0-B20230714.1105. This flaw, which resides in the function formMapReboot of the file \/boafrm\/formMapReboot, affects a wide range of devices and exposes them to severe security risks. It is of significant concern <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-45554-high-severity-memory-corruption-due-to-race-condition\/\"  data-wpil-monitor-id=\"58168\">due to its severity<\/a> and the fact that it can be exploited remotely. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-53020-information-disclosure-vulnerability-in-rtp-packet-decoding\/\"  data-wpil-monitor-id=\"58482\">vulnerability&#8217;s public disclosure<\/a> coupled with the vendor&#8217;s lack of response to the issue compounds the potential threat it poses.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-5503<br \/>\nSeverity: Critical, CVSS Score 8.8<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: Potential for <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-42977-path-handling-vulnerability-that-risks-data-leakage-and-system-compromise\/\"  data-wpil-monitor-id=\"56941\">system compromise and data leakage<\/a><\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3347906025\" 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><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5739-critical-buffer-overflow-vulnerability-in-totolink-x15-http-post-request-handler\/\"  data-wpil-monitor-id=\"59801\">TOTOLINK X15<\/a> | 1.0.0-B20230714.1105<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31263-critical-memory-handling-vulnerability-could-lead-to-system-compromise-or-data-leakage-in-macos-sequoia-15-4\/\"  data-wpil-monitor-id=\"57013\">vulnerability occurs due to inadequate handling<\/a> of the deviceMacAddr argument in the formMapReboot function. By manipulating this argument, an attacker can trigger a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30295-heap-based-buffer-overflow-vulnerability-in-adobe-framemaker\/\"  data-wpil-monitor-id=\"56692\">buffer overflow<\/a>. This can lead to unauthorized execution of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45343-high-risk-vulnerability-in-tenda-w18e-v-2-0-v-16-01-0-11-allows-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"56678\">arbitrary code<\/a> or denial of service due to system crash. Given that the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3755-unauthenticated-remote-attack-on-mitsubishi-electric-melsec-iq-f-series-cpu-modules\/\"  data-wpil-monitor-id=\"58355\">attack can be performed remotely<\/a>, the attacker does not need to have physical access to the device, making it a high-risk vulnerability.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-113040120\" 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 is a conceptual example of how the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45997-exploiting-file-upload-vulnerability-in-web-based-pharmacy-product-management-system\/\"  data-wpil-monitor-id=\"56942\">vulnerability might be exploited<\/a>.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/boafrm\/formMapReboot HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\ndeviceMacAddr=AA:BB:CC:DD:EE:FF%00[buffer overflow payload]<\/code><\/pre>\n<p>In this example, the `deviceMacAddr` field is filled with a legitimate MAC address followed by a null byte `%00` and then a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2497-stack-based-buffer-overflow-vulnerability-in-autodesk-revit\/\"  data-wpil-monitor-id=\"57167\">buffer overflow<\/a> payload. This payload can be crafted to cause the system to execute arbitrary code, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5100-a-double-free-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"56614\">leading to a potential system<\/a> compromise.<\/p>\n<p><strong>Mitigation and Recommendations<\/strong><\/p>\n<p>To mitigate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52709-high-risk-deserialization-of-untrusted-data-vulnerability-in-everest-forms\/\"  data-wpil-monitor-id=\"65266\">risks associated with this vulnerability<\/a>, users are advised to apply the vendor patch as soon as it becomes available. In the absence of a vendor patch, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5485-a-critical-vulnerability-pertaining-to-user-name-enumeration-in-web-management-interfaces\/\"  data-wpil-monitor-id=\"61528\">users can deploy Web<\/a> Application Firewalls (WAF) or Intrusion Detection Systems (IDS) as temporary mitigation measures. These systems can help <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45984-critical-command-injection-vulnerability-detected-in-blink-routers\/\"  data-wpil-monitor-id=\"61529\">detect and block attempts to exploit this vulnerability<\/a>. Additionally, users are advised to monitor their systems for any unusual activity or performance degradation, which might indicate an active exploitation attempt.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability, identified as CVE-2025-5503, has been discovered in TOTOLINK X15 1.0.0-B20230714.1105. This flaw, which resides in the function formMapReboot of the file \/boafrm\/formMapReboot, affects a wide range of devices and exposes them to severe security risks. It is of significant concern due to its severity and the fact that it can be [&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":[86,87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-50460","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-dos"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/50460","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=50460"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/50460\/revisions"}],"predecessor-version":[{"id":58724,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/50460\/revisions\/58724"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=50460"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=50460"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=50460"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=50460"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=50460"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=50460"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=50460"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=50460"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=50460"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}