{"id":69005,"date":"2025-08-31T11:10:45","date_gmt":"2025-08-31T11:10:45","guid":{"rendered":""},"modified":"2025-11-02T02:09:47","modified_gmt":"2025-11-02T08:09:47","slug":"cve-2025-9251-high-risk-buffer-overflow-vulnerability-in-linksys-wi-fi-extenders","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-9251-high-risk-buffer-overflow-vulnerability-in-linksys-wi-fi-extenders\/","title":{"rendered":"<strong>CVE-2025-9251: High-Risk Buffer Overflow Vulnerability in Linksys Wi-Fi Extenders<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the ever-evolving landscape of cybersecurity, a new high-risk vulnerability, CVE-2025-9251, has been discovered in a range of Linksys Wi-Fi extenders. This vulnerability impacts several Linksys models including RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000. It has been identified that this security flaw can be triggered remotely, thus raising a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-51536-critical-hardcoded-administrator-password-vulnerability-in-ai-openatlas\/\"  data-wpil-monitor-id=\"76736\">critical concern for users and network administrators<\/a>. Given its high CVSS severity score, it is crucial to understand the extent of this vulnerability, the systems it affects, and the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-7457-macos-authorization-model-exploit-leading-to-potential-mitm-attacks\/\"  data-wpil-monitor-id=\"79968\">potential ways to mitigate this exploit<\/a>.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-9251<br \/>\nSeverity: High (CVSS: 8.8)<br \/>\nAttack Vector: Remote, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-37103-hard-coded-login-credentials-vulnerability-in-hpe-networking-instant-on-access-points\/\"  data-wpil-monitor-id=\"92143\">Network Access<\/a><br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42950-sap-landscape-transformation-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"77567\">Potential System<\/a> Compromise or Data Leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3935496274\" 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 | 1.0.04.002<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48581-critical-security-flaw-allowing-local-privilege-escalation-in-mainline-installations\/\"  data-wpil-monitor-id=\"87135\">security flaw<\/a> resides in the function &#8216;sta_wps_pin&#8217; of the file &#8216;\/goform\/sta_wps_pin. This function, when manipulated with an argument &#8216;ssid&#8217;, results in a stack-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54351-buffer-overflow-vulnerability-in-iperf\/\"  data-wpil-monitor-id=\"77196\">buffer overflow<\/a>. A buffer <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48816-integer-overflow-vulnerability-in-hid-class-driver-leading-to-local-privilege-escalation\/\"  data-wpil-monitor-id=\"76723\">overflow is a type of software vulnerability<\/a> that exists when the data written to a buffer exceeds its capacity, thus allowing an attacker to overwrite adjacent memory locations.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-632522374\" 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 is a conceptual example of how the vulnerability might be exploited. Please note that this is a hypothetical scenario and does not represent a real exploit.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/sta_wps_pin HTTP\/1.1\nHost: vulnerablelinksys.com\nContent-Type: application\/json\n{ &quot;Ssid&quot;: &quot;AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...&quot; }<\/code><\/pre>\n<p>In the above example, the Ssid parameter is filled with a large number of &#8216;A&#8217; characters, thereby causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54878-heap-buffer-overflow-vulnerability-in-nasa-cryptolib\/\"  data-wpil-monitor-id=\"77483\">buffer overflow<\/a> in the target system.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>While it is evident that the vendor has yet to respond to this disclosure, it is strongly recommended that users apply vendor-provided patches as soon as they become available. In the meantime, users can implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as temporary mitigation. Regular monitoring of network traffic for any anomalies can also aid in detecting any potential attacks.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the ever-evolving landscape of cybersecurity, a new high-risk vulnerability, CVE-2025-9251, has been discovered in a range of Linksys Wi-Fi extenders. This vulnerability impacts several Linksys models including RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000. It has been identified that this security flaw can be triggered remotely, thus raising a critical concern for users [&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-69005","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\/69005","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=69005"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/69005\/revisions"}],"predecessor-version":[{"id":85354,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/69005\/revisions\/85354"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=69005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=69005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=69005"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=69005"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=69005"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=69005"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=69005"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=69005"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=69005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}