{"id":51102,"date":"2025-06-11T07:23:10","date_gmt":"2025-06-11T07:23:10","guid":{"rendered":""},"modified":"2025-10-22T21:12:50","modified_gmt":"2025-10-23T03:12:50","slug":"cve-2025-5622-critical-buffer-overflow-vulnerability-in-d-link-dir-816-1-10cnb05","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-5622-critical-buffer-overflow-vulnerability-in-d-link-dir-816-1-10cnb05\/","title":{"rendered":"<strong>CVE-2025-5622: Critical Buffer Overflow Vulnerability in D-Link DIR-816 1.10CNB05<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A critical vulnerability has been discovered in the D-Link DIR-816 1.10CNB05, a widely-used wireless router. The vulnerability lies in the wirelessApcli_5g function of the \/goform\/wirelessApcli_5g file and can be exploited remotely to cause a stack-based buffer overflow. This flaw presents a significant threat to the cybersecurity landscape, as it allows attackers to launch remote attacks <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-47668-linux-kernel-vulnerability-leading-to-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"57635\">leading to a possible system compromise or data<\/a> leakage. Given that the exploit has been disclosed publicly and can readily be used, it is crucial for users and administrators to understand the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-52928-severe-bypass-issue-in-arc-on-windows-allows-unauthorized-permissions-grant\/\"  data-wpil-monitor-id=\"65095\">severity of this issue<\/a> and take appropriate mitigation steps.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-5622<br \/>\nSeverity: Critical (CVSS 9.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-45565-memory-corruption-vulnerability-leading-to-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"58055\">Potential system compromise or data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3824004629\" 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-2025-5623-a-critical-stack-based-buffer-overflow-vulnerability-in-d-link-dir-816-1-10cnb05\/\"  data-wpil-monitor-id=\"59124\">D-Link DIR-816<\/a> | 1.10CNB05<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of a stack-based buffer <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1273-heap-based-overflow-vulnerability-in-autodesk-applications\/\"  data-wpil-monitor-id=\"57320\">overflow vulnerability<\/a> in the wirelessApcli_5g function of the \/goform\/wirelessApcli_5g file. By manipulating the argument apcli_mode_5g\/apcli_enc_5g\/apcli_default_key_5g, an attacker can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29625-critical-buffer-overflow-vulnerability-in-astrolog-v7-70\/\"  data-wpil-monitor-id=\"57634\">overflow the buffer<\/a>, potentially leading to arbitrary code execution or system crashes. This can further <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-45564-critical-memory-corruption-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"58140\">lead to system<\/a> compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2919446611\" 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>A conceptual example of how the vulnerability might be exploited is as follows:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/wirelessApcli_5g HTTP\/1.1\nHost: target_router_IP\nContent-Type: application\/x-www-form-urlencoded\napcli_mode_5g=malicious_payload&amp;apcli_enc_5g=malicious_payload&amp;apcli_default_key_5g=malicious_payload<\/code><\/pre>\n<p>In the above example, `malicious_payload` represents a specially crafted string designed to overflow the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5408-critical-vulnerability-in-wavlink-devices-leads-to-buffer-overflow\/\"  data-wpil-monitor-id=\"57696\">buffer of the target device<\/a>, thus exploiting the vulnerability.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Given that this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4986-stored-cross-site-scripting-vulnerability-in-3dexperience-product-manager\/\"  data-wpil-monitor-id=\"57328\">vulnerability affects products<\/a> that are no longer supported by the maintainer, users of the affected versions are advised to apply a vendor patch if available. If there are no patches available from the vendor, <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=\"61527\">users should consider implementing a Web<\/a> Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure to protect against potential exploits. It&#8217;s also advisable to replace unsupported devices with new, supported ones to ensure continued protection against <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41672-critical-cybersecurity-threat-exploiting-default-certificates\/\"  data-wpil-monitor-id=\"91262\">cybersecurity threats<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A critical vulnerability has been discovered in the D-Link DIR-816 1.10CNB05, a widely-used wireless router. The vulnerability lies in the wirelessApcli_5g function of the \/goform\/wirelessApcli_5g file and can be exploited remotely to cause a stack-based buffer overflow. This flaw presents a significant threat to the cybersecurity landscape, as it allows attackers to launch remote [&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-51102","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\/51102","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=51102"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51102\/revisions"}],"predecessor-version":[{"id":84291,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51102\/revisions\/84291"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=51102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=51102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=51102"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=51102"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=51102"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=51102"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=51102"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=51102"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=51102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}