{"id":33106,"date":"2025-04-28T15:48:00","date_gmt":"2025-04-28T15:48:00","guid":{"rendered":""},"modified":"2025-05-09T06:52:57","modified_gmt":"2025-05-09T06:52:57","slug":"cve-2025-28024-buffer-overflow-vulnerability-in-totolink-a810r-v4-1-2cu-5182-b20201026","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-28024-buffer-overflow-vulnerability-in-totolink-a810r-v4-1-2cu-5182-b20201026\/","title":{"rendered":"<strong>CVE-2025-28024: Buffer Overflow Vulnerability in TOTOLINK A810R V4.1.2cu.5182_B20201026<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the ever-evolving landscape of cybersecurity, vulnerabilities present a constant challenge. One such vulnerability has been discovered in TOTOLINK A810R V4.1.2cu.5182_B20201026, identified as CVE-2025-28024. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28197-ssrf-vulnerability-in-crawl4ai-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"37930\">vulnerability affects the cstecgi.cgi and has the potential to lead<\/a> to a buffer overflow situation, which can result in system compromise or data leakage. Given the prevalence of TOTOLINK products, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29905-sql-injection-vulnerability-in-telecontrol-server-basic-potentially-compromising-entire-systems\/\"  data-wpil-monitor-id=\"38147\">vulnerability could potentially<\/a> affect a vast array of systems, making it a matter of significant concern for cybersecurity professionals.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-28024<br \/>\nSeverity: Critical (9.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: System Compromise, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50612-escalation-of-privileges-and-data-leakage-in-fit2cloud-cloud-explorer-lite\/\"  data-wpil-monitor-id=\"41293\">Data Leakage<\/a><\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1029701344\" 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-2025-28030-stack-overflow-vulnerability-in-totolink-a810r-router\/\"  data-wpil-monitor-id=\"41592\">TOTOLINK A810R<\/a> | V4.1.2cu.5182_B20201026<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability in <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-0756-unrestricted-jndi-identifier-vulnerability-in-hitachi-vantara-pentaho-data-integration-analytics\/\"  data-wpil-monitor-id=\"37774\">TOTOLINK A810R<\/a> V4.1.2cu.5182_B20201026 exists due to inadequate bounds checking on user-supplied data in the cstecgi.cgi. This can result in a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29044-buffer-overflow-vulnerability-in-netgear-r61-router\/\"  data-wpil-monitor-id=\"37923\">buffer overflow<\/a> condition where an attacker can inject malicious code. If the malicious payload is crafted correctly, it can overwrite the software\u2019s stack, leading to arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-53303-remote-code-execution-vulnerability-in-lrqa-nettitude-poshc2\/\"  data-wpil-monitor-id=\"38068\">code execution<\/a>. This can further lead to a total <a href=\"https:\/\/www.ameeba.com\/blog\/yale-new-haven-health-system-data-breach-a-comprehensive-analysis-of-a-cybersecurity-breach-impacting-5-5-million-patients\/\"  data-wpil-monitor-id=\"38830\">system compromise or data<\/a> leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1348684310\" 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 vulnerability might be <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32834-exploiting-telecontrol-server-basic-via-sql-injection\/\"  data-wpil-monitor-id=\"38829\">exploited via<\/a> an HTTP request:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/cstecgi.cgi HTTP\/1.1\nHost: vulnerable-device-ip\nContent-Type: application\/x-www-form-urlencoded\noverflow_data=AAAAAAAAAAAAAAAAAAAAAAAAA...[repeat &#039;A&#039; until overflow]...+malicious_code<\/code><\/pre>\n<p>In this example, the &#8220;overflow_data&#8221; parameter is filled with a large amount of &#8216;A&#8217; characters, causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3619-critical-heap-buffer-overflow-vulnerability-in-google-chrome-codecs\/\"  data-wpil-monitor-id=\"40070\">buffer overflow<\/a>. Following this, the attacker&#8217;s <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32958-critical-adept-language-vulnerability-allowing-malicious-code-execution\/\"  data-wpil-monitor-id=\"38250\">malicious code<\/a> is attached, which would be executed due to the overflow.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Users are advised to apply the vendor patch as soon as it becomes available. Until then, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation. Always practice safe cybersecurity hygiene by limiting exposure of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-44755-critical-sql-injection-vulnerability-in-sacco-management-system-v1-0\/\"  data-wpil-monitor-id=\"39634\">critical systems<\/a> and maintaining up-to-date backups.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the ever-evolving landscape of cybersecurity, vulnerabilities present a constant challenge. One such vulnerability has been discovered in TOTOLINK A810R V4.1.2cu.5182_B20201026, identified as CVE-2025-28024. This vulnerability affects the cstecgi.cgi and has the potential to lead to a buffer overflow situation, which can result in system compromise or data leakage. Given the prevalence of TOTOLINK [&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-33106","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\/33106","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=33106"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/33106\/revisions"}],"predecessor-version":[{"id":36901,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/33106\/revisions\/36901"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=33106"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=33106"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=33106"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=33106"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=33106"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=33106"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=33106"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=33106"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=33106"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}