{"id":47165,"date":"2025-05-31T19:39:37","date_gmt":"2025-05-31T19:39:37","guid":{"rendered":""},"modified":"2025-06-17T23:19:02","modified_gmt":"2025-06-18T05:19:02","slug":"cve-2025-5215-stack-based-buffer-overflow-vulnerability-in-d-link-dcs-5020l-1-01-b2","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5215-stack-based-buffer-overflow-vulnerability-in-d-link-dcs-5020l-1-01-b2\/","title":{"rendered":"<strong>CVE-2025-5215: Stack-Based Buffer Overflow Vulnerability in D-Link DCS-5020L 1.01_B2<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity community is raising alarms regarding a critical vulnerability found in D-Link DCS-5020L 1.01_B2. This security flaw, identified as CVE-2025-5215, pertains to a stack-based buffer overflow that can be triggered remotely. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3078-critical-passback-vulnerability-in-production-and-office-multifunction-printers\/\"  data-wpil-monitor-id=\"55190\">vulnerability is particularly concerning because it affects products<\/a> that are no longer supported by the maintainer, making them a soft target for potential attackers. The exploit has also been made public, further amplifying the risks associated with this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-41195-critical-security-flaw-in-ocuco-innovation-s-innovaserviceintf-exe\/\"  data-wpil-monitor-id=\"53548\">security flaw<\/a>.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-5215<br \/>\nSeverity: Critical (8.8 CVSS Score)<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2409-file-corruption-vulnerability-in-aspect-with-potential-for-system-compromise\/\"  data-wpil-monitor-id=\"53114\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1948491867\" 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>D-Link DCS-5020L | 1.01_B2<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-46687-critical-use-after-free-vulnerability-in-linux-kernel-btrfs-file-system\/\"  data-wpil-monitor-id=\"52743\">vulnerability resides in the function websReadEvent of the file<\/a> \/rame\/ptdc.cgi. When an attacker manipulates the argument &#8220;Authorization&#8221;, it leads to a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41426-buffer-overflow-vulnerability-in-vertiv-products\/\"  data-wpil-monitor-id=\"52729\">buffer overflow<\/a>. This can allow the attacker to execute arbitrary code, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-26625-linux-kernel-vulnerability-leading-to-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"53115\">leading to a potential system compromise or data<\/a> leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-4238896951\" 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 representation of how the exploit might be carried out. This example demonstrates a malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5671-critical-buffer-overflow-vulnerability-in-totolink-n302r-plus-http-post-request-handler\/\"  data-wpil-monitor-id=\"59510\">HTTP request<\/a> that manipulates the &#8216;Authorization&#8217; argument:<\/p>\n<pre><code class=\"\" data-line=\"\">GET \/rame\/ptdc.cgi HTTP\/1.1\nHost: target.example.com\nAuthorization: Bearer [malicious_payload]<\/code><\/pre>\n<p>In this conceptual example, the [malicious_payload] is designed to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-44884-critical-stack-overflow-vulnerability-in-fw-wgs-804hpt\/\"  data-wpil-monitor-id=\"52750\">overflow the stack<\/a> buffer, leading to the execution of arbitrary code.<\/p>\n<p><strong>Mitigation and Protection<\/strong><\/p>\n<p>Given that the affected product is no longer supported by the maintainer, applying a vendor patch is not an option. As a temporary mitigation, users are advised to implement a Web Application Firewall (WAF) or an Intrusion Detection System (IDS). These can help to identify and block attempts to <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=\"59511\">exploit this vulnerability<\/a>. However, these are only stopgap measures, and it is highly recommended to upgrade to a supported device or software version for a long-term solution.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity community is raising alarms regarding a critical vulnerability found in D-Link DCS-5020L 1.01_B2. This security flaw, identified as CVE-2025-5215, pertains to a stack-based buffer overflow that can be triggered remotely. This vulnerability is particularly concerning because it affects products that are no longer supported by the maintainer, making them a soft target [&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-47165","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\/47165","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=47165"}],"version-history":[{"count":7,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/47165\/revisions"}],"predecessor-version":[{"id":53201,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/47165\/revisions\/53201"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=47165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=47165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=47165"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=47165"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=47165"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=47165"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=47165"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=47165"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=47165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}