{"id":54128,"date":"2025-06-22T20:19:17","date_gmt":"2025-06-22T20:19:17","guid":{"rendered":""},"modified":"2025-10-22T21:12:49","modified_gmt":"2025-10-23T03:12:49","slug":"cve-2025-6149-critical-buffer-overflow-vulnerability-in-totolink-a3002r","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6149-critical-buffer-overflow-vulnerability-in-totolink-a3002r\/","title":{"rendered":"<strong>CVE-2025-6149: Critical Buffer Overflow Vulnerability in TOTOLINK A3002R<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability, labelled as CVE-2025-6149, has been identified in the TOTOLINK A3002R 4.0.0-B20230531.1404. This vulnerability lies in an unknown function of the file \/boafrm\/formSysLog in the HTTP POST Request Handler component. It poses a significant threat as it can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5901-buffer-overflow-vulnerability-in-totolink-t10-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"60493\">lead to a buffer overflow<\/a>, potentially compromising systems or leading to data leakage. Given its <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41672-critical-cybersecurity-threat-exploiting-default-certificates\/\"  data-wpil-monitor-id=\"91259\">critical nature and the fact that this exploit<\/a> has been disclosed to the public, immediate attention and mitigation is required.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6149<br \/>\nSeverity: Critical (8.8 CVSS score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40912-critical-vulnerability-in-cryptx-for-perl-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"60778\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-4023402239\" 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>TOTOLINK A3002R | 4.0.0-B20230531.1404<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <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=\"61505\">vulnerability is triggered when a malicious user<\/a> manipulates the &#8216;submit-url&#8217; argument in the HTTP POST request. This manipulation leads to a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5905-critical-buffer-overflow-vulnerability-in-totolink-t10\/\"  data-wpil-monitor-id=\"60546\">buffer overflow<\/a> in the \/boafrm\/formSysLog file of the HTTP POST Request Handler component. <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5902-critical-buffer-overflow-vulnerability-in-totolink-t10\/\"  data-wpil-monitor-id=\"60556\">Buffer overflows<\/a> occur when more data is written into a block of memory, or buffer, than it can hold. This overflow of data can overwrite adjacent memory, leading to erratic program behavior, system crashes, or potential <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47163-unauthorized-code-execution-through-microsoft-sharepoint-deserialization-vulnerability\/\"  data-wpil-monitor-id=\"60983\">execution of malicious code<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1941118652\" 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 simplified, conceptual example of how the vulnerability might be exploited. This is a mock HTTP POST request containing a malicious payload that leads to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5903-critical-buffer-overflow-vulnerability-in-totolink-t10-4-1-8cu-5207\/\"  data-wpil-monitor-id=\"60569\">buffer overflow<\/a>.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/boafrm\/formSysLog HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nsubmit-url=%2Fboafrm%2FformSysLog&amp;malicious_payload=AAAA...[continues for a very long time]<\/code><\/pre>\n<p>In the above example, the &#8216;malicious_payload&#8217; is a long string of &#8216;A&#8217;s that exceeds the buffer&#8217;s capacity, causing an overflow.<\/p>\n<p><strong>Recommended Mitigation<\/strong><\/p>\n<p>Users are advised to apply the vendor patch as soon as it becomes available. In the meantime, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary mitigation method to monitor and block any suspicious activities. Moreover, frequent <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49199-application-backup-zips-vulnerability-and-system-compromise\/\"  data-wpil-monitor-id=\"61275\">system and data backups<\/a> can be invaluable in the event of a successful exploit.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability, labelled as CVE-2025-6149, has been identified in the TOTOLINK A3002R 4.0.0-B20230531.1404. This vulnerability lies in an unknown function of the file \/boafrm\/formSysLog in the HTTP POST Request Handler component. It poses a significant threat as it can lead to a buffer overflow, potentially compromising systems or leading to data leakage. Given [&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],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-54128","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54128","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=54128"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54128\/revisions"}],"predecessor-version":[{"id":84288,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54128\/revisions\/84288"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=54128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=54128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=54128"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=54128"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=54128"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=54128"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=54128"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=54128"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=54128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}