{"id":38493,"date":"2025-05-15T22:03:58","date_gmt":"2025-05-15T22:03:58","guid":{"rendered":""},"modified":"2025-08-31T18:37:58","modified_gmt":"2025-09-01T00:37:58","slug":"cve-2025-4448-critical-buffer-overflow-vulnerability-in-d-link-dir-619l","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-4448-critical-buffer-overflow-vulnerability-in-d-link-dir-619l\/","title":{"rendered":"<strong>CVE-2025-4448: Critical Buffer Overflow Vulnerability in D-Link DIR-619L<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the world of cybersecurity, the discovery of new vulnerabilities is a common occurrence and the critical CVE-2025-4448 vulnerability affecting D-Link DIR-619L 2.04B04 is no exception. The vulnerability, which is triggered by an argument manipulation in the function formEasySetupWizard, can lead to buffer overflow and is an alarming concern for users of D-Link DIR-619L. This has been classified as critical, meaning it can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49126-critical-vulnerability-in-solid-edge-se2023-allows-for-potential-system-compromise\/\"  data-wpil-monitor-id=\"43421\">potentially lead to system<\/a> compromise or data leakage. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3078-critical-passback-vulnerability-in-production-and-office-multifunction-printers\/\"  data-wpil-monitor-id=\"55183\">vulnerability is especially problematic as it affects products<\/a> that are no longer supported by the maintainer, hence requiring immediate attention.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-4448<br \/>\nSeverity: Critical (CVSS Score: 8.8)<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49129-stack-overflow-vulnerability-in-solid-edge-se2023-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"43508\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2197133995\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4452-critical-buffer-overflow-vulnerability-in-d-link-dir-619l-2-04b04\/\"  data-wpil-monitor-id=\"45250\">D-Link DIR-619L<\/a> | 2.04B04<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4279-critical-arbitrary-file-upload-vulnerability-in-wordpress-external-image-replace-plugin\/\"  data-wpil-monitor-id=\"43217\">critical vulnerability<\/a> CVE-2025-4448 is a result of inadequate bounds checking in the formEasySetupWizard function. This function takes curTime as an argument, which under normal circumstances should have a controlled length. However, an attacker can manipulate this argument by providing an unusually long string, causing an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49122-critical-heap-based-buffer-overflow-vulnerability-in-solid-edge-se2023\/\"  data-wpil-monitor-id=\"43369\">overflow of the buffer<\/a>. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-38620-integer-overflow-vulnerabilities-in-gtkwave-3-3-115-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"43223\">overflow condition can lead to arbitrary code<\/a> execution, allowing the attacker to compromise the system or leak data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-822450629\" 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>Below is a conceptual example of how the vulnerability might be exploited. This example is a HTTP request with a malicious payload that exploits the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49121-heap-based-buffer-overflow-vulnerability-in-solid-edge-se2023\/\"  data-wpil-monitor-id=\"43391\">buffer overflow<\/a> condition.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/formEasySetupWizard HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;curTime&quot;: &quot;A string that is long enough to cause a buffer overflow...&quot; }<\/code><\/pre>\n<p>Please note that this is a conceptual example and the real exploit might vary depending on the specifics of the implementation and the attacker\u2019s intent.<\/p>\n<p><strong>Mitigation Guide<\/strong><\/p>\n<p>The best way to mitigate this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47884-jenkins-openid-connect-provider-plugin-vulnerability-leading-to-unauthorized-access\/\"  data-wpil-monitor-id=\"50013\">vulnerability is to apply the patch provided<\/a> by the vendor. If the vendor support is no longer available, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary protection. These systems can help in <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20217-denial-of-service-vulnerability-in-snort-3-detection-engine-of-cisco-secure-firewall-threat-defense-software\/\"  data-wpil-monitor-id=\"77027\">detecting and preventing attacks that attempt to exploit this vulnerability<\/a>. However, these are just temporary measures and users are advised to replace unsupported products with supported ones to ensure long-term security.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the world of cybersecurity, the discovery of new vulnerabilities is a common occurrence and the critical CVE-2025-4448 vulnerability affecting D-Link DIR-619L 2.04B04 is no exception. The vulnerability, which is triggered by an argument manipulation in the function formEasySetupWizard, can lead to buffer overflow and is an alarming concern for users of D-Link DIR-619L. [&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-38493","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\/38493","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=38493"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38493\/revisions"}],"predecessor-version":[{"id":69420,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38493\/revisions\/69420"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=38493"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=38493"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=38493"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=38493"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=38493"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=38493"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=38493"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=38493"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=38493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}