{"id":75938,"date":"2025-09-17T00:35:44","date_gmt":"2025-09-17T00:35:44","guid":{"rendered":""},"modified":"2025-10-22T19:05:03","modified_gmt":"2025-10-23T01:05:03","slug":"cve-2025-58447-critical-buffer-overflow-vulnerability-in-rathena-mmorpg-server","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-58447-critical-buffer-overflow-vulnerability-in-rathena-mmorpg-server\/","title":{"rendered":"<strong>CVE-2025-58447: Critical Buffer Overflow Vulnerability in rAthena MMORPG Server<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the evolving landscape of cybersecurity, new vulnerabilities continue to be uncovered in various software systems. The latest in this line is CVE-2025-58447, a critical buffer overflow vulnerability found in rAthena, an open-source cross-platform massively multiplayer online role playing game server. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-9299-remote-stack-based-buffer-overflow-vulnerability-in-tenda-m3-1-0-0-12\/\"  data-wpil-monitor-id=\"84151\">vulnerability could potentially allow a remote<\/a> attacker to execute arbitrary code on the server or cause a system crash, leading to a possible denial of service. Given the popularity of MMORPGs and the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54486-critical-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-3-9-0\/\"  data-wpil-monitor-id=\"83452\">critical nature of this vulnerability<\/a>, it is imperative that users and administrators immediately implement the necessary mitigation steps.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-58447<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-2025-22404-potential-system-compromise-due-to-use-after-free-vulnerability\/\"  data-wpil-monitor-id=\"85662\">System compromise<\/a>, potential data leakage, and denial of service<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2724175695\" 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>rAthena | Prior to commit 2f5248b<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-57808-critical-vulnerability-in-esphome-web-server-authentication\/\"  data-wpil-monitor-id=\"86056\">vulnerability resides in the login server<\/a> of rAthena. By sending a specially crafted `CA_SSO_LOGIN_REQ` with an oversized token length, an attacker can cause a heap-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54493-critical-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-3-9-0\/\"  data-wpil-monitor-id=\"83399\">buffer overflow<\/a>. This overflow allows the attacker to overwrite adjacent session fields, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7775-critical-memory-overflow-vulnerability-in-netscaler-adc-and-gateway-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"83714\">leading to immediate denial of service due to a system<\/a> crash. Moreover, the attacker could potentially achieve <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-0074-critical-remote-code-execution-vulnerability-in-sdp-discovery\/\"  data-wpil-monitor-id=\"83593\">remote code execution<\/a> via heap corruption, leading to system compromise and possible data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3472037544\" 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>As a conceptual <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49532-integer-underflow-vulnerability-in-illustrator-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"86171\">illustration of how an attacker might exploit this vulnerability<\/a>, consider the following pseudocode:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/login HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;CA_SSO_LOGIN_REQ&quot;: &quot;AAA...[oversized token]&quot; }<\/code><\/pre>\n<p>In this pseudo request, the &#8220;CA_SSO_LOGIN_REQ&#8221; field is filled with an oversized token, which could trigger the heap-based <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54491-critical-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-3-9-0\/\"  data-wpil-monitor-id=\"83438\">buffer overflow<\/a> and potentially lead to remote code execution or a system crash.<br \/>\nTo mitigate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7093-critical-vulnerability-in-belkin-f9k1122-1-00-33-impacting-system-security-and-data-integrity\/\"  data-wpil-monitor-id=\"91097\">impact of this vulnerability<\/a>, it is advised to apply the vendor patch or use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary solution. However, these are only stop-gap measures and applying the vendor patch is the most effective solution to fully <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58280-object-heap-address-exposure-vulnerability-in-ark-ets\/\"  data-wpil-monitor-id=\"87233\">address this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the evolving landscape of cybersecurity, new vulnerabilities continue to be uncovered in various software systems. The latest in this line is CVE-2025-58447, a critical buffer overflow vulnerability found in rAthena, an open-source cross-platform massively multiplayer online role playing game server. This vulnerability could potentially allow a remote attacker to execute arbitrary code on [&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":[86,87,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-75938","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-dos","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/75938","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=75938"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/75938\/revisions"}],"predecessor-version":[{"id":84116,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/75938\/revisions\/84116"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=75938"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=75938"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=75938"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=75938"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=75938"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=75938"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=75938"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=75938"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=75938"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}