{"id":70688,"date":"2025-09-03T12:37:39","date_gmt":"2025-09-03T12:37:39","guid":{"rendered":""},"modified":"2025-10-03T14:55:31","modified_gmt":"2025-10-03T20:55:31","slug":"cve-2025-9525-critical-stack-based-buffer-overflow-vulnerability-in-linksys-e1700","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9525-critical-stack-based-buffer-overflow-vulnerability-in-linksys-e1700\/","title":{"rendered":"<strong>CVE-2025-9525: Critical Stack-Based Buffer Overflow Vulnerability in Linksys E1700<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is constantly evolving, with new vulnerabilities and exploits being discovered on a regular basis. One of the recent vulnerabilities that has come to light is CVE-2025-9525. This security flaw affects Linksys E1700 1.0.0.4.003, a widely used networking device, and poses a serious threat due to its severity and potential for <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54063-remote-code-execution-vulnerability-in-cherry-studio-desktop-client\/\"  data-wpil-monitor-id=\"78329\">remote execution<\/a>.<br \/>\nThis <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8832-remote-buffer-overflow-vulnerability-in-linksys-routers\/\"  data-wpil-monitor-id=\"78322\">vulnerability matters as it can be exploited remotely<\/a>, potentially leading to system compromise or data leakage. Given the widespread use of Linksys devices, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8816-critical-buffer-overflow-vulnerability-in-linksys-range-extenders\/\"  data-wpil-monitor-id=\"78367\">vulnerability could have a significant impact on a broad range<\/a> of users and businesses. The vendor has been notified but has yet to respond, increasing the urgency for awareness and mitigation.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-9525<br \/>\nSeverity: Critical (8.8 CVSS score)<br \/>\nAttack Vector: Remote<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50160-heap-based-buffer-overflow-in-windows-rras-posing-system-compromise-risk\/\"  data-wpil-monitor-id=\"78446\">System Compromise<\/a>, Potential Data Leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3985781952\" 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-2025-9527-remote-stack-based-buffer-overflow-vulnerability-in-linksys-e1700-routers\/\"  data-wpil-monitor-id=\"88563\">Linksys E1700<\/a> | 1.0.0.4.003<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The CVE-2025-9525 exploit targets a flaw in the &#8216;setWan&#8217; function found in the file &#8216;\/goform\/setWan&#8217; of the Linksys E1700. The vulnerability is a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50163-critical-heap-based-buffer-overflow-in-windows-routing-and-remote-access-service-rras\/\"  data-wpil-monitor-id=\"78311\">buffer overflow<\/a> that can be triggered by manipulating the &#8216;DeviceName\/lanIp&#8217; argument.<br \/>\nThis allows a malicious actor to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54951-buffer-overflow-vulnerability-in-executorch-models-loading\/\"  data-wpil-monitor-id=\"78314\">overflow the buffer<\/a> with more data than it is designed to hold, causing the program to overwrite other important data in memory. In turn, this can lead to unexpected behavior, including program crashes, incorrect operations, and in some cases, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-25278-local-arbitrary-code-execution-in-openharmony-v5-0-3-and-prior-versions\/\"  data-wpil-monitor-id=\"78357\">execution of arbitrary code<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1917147988\" 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 this vulnerability could be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/setWan HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nDeviceName=OVERFLOWED_DATA&amp;lanIp=1.1.1.1<\/code><\/pre>\n<p>In this example, &#8216;OVERFLOWED_DATA&#8217; represents a string of data that exceeds the buffer&#8217;s capacity, triggering the overflow.<\/p>\n<p><strong>How to Mitigate the Vulnerability<\/strong><\/p>\n<p>As of now, the vendor has not provided a patch for this vulnerability. In the meantime, users can mitigate the risk by implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS). These solutions can monitor and block suspicious activities, including <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46414-unlimited-pin-attempts-vulnerability-in-api\/\"  data-wpil-monitor-id=\"81211\">attempts to exploit this vulnerability<\/a>. However, these are temporary measures, and users should anticipate a patch from the vendor to fully resolve this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48581-critical-security-flaw-allowing-local-privilege-escalation-in-mainline-installations\/\"  data-wpil-monitor-id=\"87115\">security flaw<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is constantly evolving, with new vulnerabilities and exploits being discovered on a regular basis. One of the recent vulnerabilities that has come to light is CVE-2025-9525. This security flaw affects Linksys E1700 1.0.0.4.003, a widely used networking device, and poses a serious threat due to its severity and potential for 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],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-70688","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\/70688","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=70688"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/70688\/revisions"}],"predecessor-version":[{"id":81372,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/70688\/revisions\/81372"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=70688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=70688"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=70688"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=70688"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=70688"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=70688"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=70688"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=70688"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=70688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}