{"id":53242,"date":"2025-06-18T05:29:31","date_gmt":"2025-06-18T05:29:31","guid":{"rendered":""},"modified":"2025-07-05T17:20:20","modified_gmt":"2025-07-05T23:20:20","slug":"cve-2025-33064-heap-based-buffer-overflow-vulnerability-in-windows-routing-and-remote-access-service-rras","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-33064-heap-based-buffer-overflow-vulnerability-in-windows-routing-and-remote-access-service-rras\/","title":{"rendered":"<strong>CVE-2025-33064: Heap-based Buffer Overflow Vulnerability in Windows Routing and Remote Access Service (RRAS)<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The Common Vulnerabilities and Exposures system has recently identified a significant vulnerability, CVE-2025-33064, impacting the Windows Routing and Remote Access Service (RRAS). This security weakness, classified as a heap-based buffer overflow, presents a serious threat to all systems utilizing the affected service. Buffer overflow vulnerabilities are notorious for their potential to allow an attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1079-client-remote-code-execution-via-improper-symbolic-link-resolution-in-google-web-designer\/\"  data-wpil-monitor-id=\"59557\">execute arbitrary code<\/a> on the compromised system, leading to potentially critical data leakage or system compromise.<br \/>\nThe severity of CVE-2025-33064 is underlined by its CVSS (Common <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21475-critical-memory-corruption-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"59923\">Vulnerability Scoring System<\/a>) score of 8.8, indicating its high risk to organizations and individuals. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49013-code-injection-vulnerability-in-wilderforge-projects-due-to-unsafe-github-actions-usage\/\"  data-wpil-monitor-id=\"60096\">vulnerability is particularly concerning due<\/a> to the widespread use of Windows RRAS in both enterprise and personal environments.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-33064<br \/>\nSeverity: High (CVSS: 8.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31222-potential-privilege-elevation-and-system-compromise-vulnerability\/\"  data-wpil-monitor-id=\"59663\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2872200789\" 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-2025-33073-windows-smb-improper-access-control-vulnerability\/\"  data-wpil-monitor-id=\"61064\">Windows Routing and Remote Access<\/a> Service | All versions prior to the patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of a heap-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5630-critical-buffer-overflow-vulnerability-in-d-link-dir-816-1-10cnb05\/\"  data-wpil-monitor-id=\"59639\">buffer overflow vulnerability<\/a> in Windows RRAS. This type of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49072-deserialization-of-untrusted-data-vulnerability-in-ancorathemes-mr-murphy\/\"  data-wpil-monitor-id=\"59706\">vulnerability occurs when data<\/a> is written to a buffer and exceeds its capacity, causing the excess data to &#8220;overflow&#8221; into adjacent memory spaces. In this case, an attacker could send specially crafted data packets to the RRAS, causing the service to overflow its buffer and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31259-vulnerability-in-macos-sequoia-allowing-for-potential-privilege-escalation\/\"  data-wpil-monitor-id=\"59719\">allowing the attacker to execute arbitrary code with elevated privileges<\/a> on the system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-934294341\" 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 hypothetical example might involve an attacker sending a malicious packet to the RRAS, which could look something like this:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/RRAS\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/octet-stream\n{ &quot;data&quot;: &quot;A&quot;.repeat(10000) } \/\/This is a conceptual example. The &#039;A&#039; character is repeated many times to overflow the buffer.<\/code><\/pre>\n<p>In this conceptual example, the attacker sends a large amount of data (represented by the repeated &#8216;A&#8217; character) to the RRAS endpoint, causing the service&#8217;s <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5619-critical-remote-buffer-overflow-vulnerability-in-tenda-ch22-1-0-0-1\/\"  data-wpil-monitor-id=\"59778\">buffer to overflow<\/a> and potentially allowing the attacker to execute arbitrary code.<br \/>\nPlease note that this is a simplified and conceptual representation of how the exploit might be carried out. Actual exploits would likely involve complex manipulation of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24274-input-validation-issue-exploitable-via-malicious-app-on-macos\/\"  data-wpil-monitor-id=\"59587\">overflowed buffer<\/a> to execute specific malicious instructions.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>The most effective solution to address this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50213-special-element-injection-vulnerability-in-apache-airflow-providers-snowflake\/\"  data-wpil-monitor-id=\"64020\">vulnerability is to apply the patch provided<\/a> by the vendor. If this is not immediately possible, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may provide temporary mitigation. However, these should not be considered long-term solutions, as they may not fully <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49155-uncontrolled-search-path-vulnerability-in-trend-micro-apex-one-data-loss-prevention-module\/\"  data-wpil-monitor-id=\"62526\">prevent exploitation of the vulnerability<\/a>. All users of the affected service are strongly encouraged to apply the vendor&#8217;s patch as soon as possible.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The Common Vulnerabilities and Exposures system has recently identified a significant vulnerability, CVE-2025-33064, impacting the Windows Routing and Remote Access Service (RRAS). This security weakness, classified as a heap-based buffer overflow, presents a serious threat to all systems utilizing the affected service. Buffer overflow vulnerabilities are notorious for their potential to allow an attacker [&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":[82],"product":[],"attack_vector":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-53242","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft","attack_vector-buffer-overflow"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53242","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=53242"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53242\/revisions"}],"predecessor-version":[{"id":57565,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/53242\/revisions\/57565"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=53242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=53242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=53242"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=53242"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=53242"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=53242"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=53242"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=53242"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=53242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}