{"id":69796,"date":"2025-09-01T17:21:01","date_gmt":"2025-09-01T17:21:01","guid":{"rendered":""},"modified":"2025-09-08T17:19:20","modified_gmt":"2025-09-08T23:19:20","slug":"cve-2025-9356-linksys-range-extenders-vulnerable-to-stack-based-buffer-overflow-attack","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9356-linksys-range-extenders-vulnerable-to-stack-based-buffer-overflow-attack\/","title":{"rendered":"<strong>CVE-2025-9356: Linksys Range Extenders Vulnerable to Stack-based Buffer Overflow Attack<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is an ever-evolving battlefield. A vulnerability recently identified, dubbed CVE-2025-9356, has caused quite a stir and is a matter of concern for many. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8817-critical-stack-based-buffer-overflow-vulnerability-in-linksys-devices\/\"  data-wpil-monitor-id=\"77780\">critical vulnerability affects a range of Linksys<\/a> extenders namely RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000. These extenders are at risk of a stack-based buffer overflow, a serious threat that could allow remote attackers to execute <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21165-out-of-bounds-write-vulnerability-in-substance3d-designer-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"77463\">arbitrary code<\/a>, potentially compromising the system or leaking sensitive data.<br \/>\nThis <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8820-critical-buffer-overflow-vulnerability-in-linksys-range-extenders\/\"  data-wpil-monitor-id=\"77804\">vulnerability matters because of the widespread use of these Linksys<\/a> range extenders in home and business environments. Given the remote attack vector, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8714-critical-postgresql-vulnerability-allowing-malicious-code-injection-by-superusers\/\"  data-wpil-monitor-id=\"80768\">malicious actors could exploit this vulnerability<\/a> from anywhere in the world, increasing the risk and potential scale of the damage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-9356<br \/>\nSeverity: High (8.8\/10)<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=\"78452\">System compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3971904565\" 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>Linksys RE6250 | 1.0.013.001<br \/>\nLinksys RE6300 | 1.0.04.001<br \/>\nLinksys RE6350 | 1.0.04.002<br \/>\nLinksys RE6500 | 1.1.05.003<br \/>\nLinksys RE7000 | 1.2.07.001<br \/>\nLinksys RE9000 | 1.2.07.001<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55746-unauthenticated-file-manipulation-vulnerability-in-directus\/\"  data-wpil-monitor-id=\"78734\">vulnerability lies within the function inboundFilterAdd of the file<\/a> \/goform\/inboundFilterAdd. Manipulation of the argument ruleName can lead to a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54878-heap-buffer-overflow-vulnerability-in-nasa-cryptolib\/\"  data-wpil-monitor-id=\"77479\">buffer overflow<\/a>, a condition where the stack pointer exceeds the stack bound, allowing an attacker to control the execution of the system, possibly leading to system crash or execution of malicious code.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1569070226\" 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>The following conceptual example illustrates a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42950-sap-landscape-transformation-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"77556\">potential exploitation of this vulnerability<\/a>. Note that this is a simplified representation, not an actual piece of exploit code.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/inboundFilterAdd HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{\n&quot;ruleName&quot;: &quot;A&quot;*10000 \/\/ This payload overflows the buffer\n}<\/code><\/pre>\n<p>In this example, the ruleName is overloaded with a string of &#8216;A&#8217;s, exceeding the buffer capacity. This could cause a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53131-heap-based-buffer-overflow-vulnerability-in-windows-media\/\"  data-wpil-monitor-id=\"77614\">buffer overflow<\/a>, potentially allowing an attacker to execute arbitrary code.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is an ever-evolving battlefield. A vulnerability recently identified, dubbed CVE-2025-9356, has caused quite a stir and is a matter of concern for many. This critical vulnerability affects a range of Linksys extenders namely RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000. These extenders are at risk of a stack-based buffer overflow, a [&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-69796","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\/69796","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=69796"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/69796\/revisions"}],"predecessor-version":[{"id":73189,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/69796\/revisions\/73189"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=69796"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=69796"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=69796"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=69796"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=69796"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=69796"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=69796"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=69796"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=69796"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}