{"id":59406,"date":"2025-07-15T19:18:40","date_gmt":"2025-07-15T19:18:40","guid":{"rendered":""},"modified":"2025-09-16T12:31:59","modified_gmt":"2025-09-16T18:31:59","slug":"cve-2025-4855-unauthorized-access-vulnerability-in-support-board-plugin-for-wordpress","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-4855-unauthorized-access-vulnerability-in-support-board-plugin-for-wordpress\/","title":{"rendered":"<strong>CVE-2025-4855: Unauthorized Access Vulnerability in Support Board Plugin for WordPress<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>This blog post shines a light on a critical vulnerability &#8211; CVE-2025-4855, that resides in the Support Board plugin for WordPress. This vulnerability could potentially compromise the security of numerous WordPress websites, by allowing unauthorized access, modification, or deletion of data. It is crucial for system administrators, website owners, and cybersecurity professionals to understand the details of this vulnerability, as it has a high severity score and could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7793-critical-vulnerability-in-tenda-fh451-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"68831\">lead to significant data leakage or system<\/a> compromise if exploited.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-4855<br \/>\nSeverity: Critical (9.8 CVSS score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54378-unauthorized-access-vulnerability-in-hax-cms\/\"  data-wpil-monitor-id=\"68846\">Unauthorized access<\/a>, modification, or deletion of data, potential system compromise, and data leakage.<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1470302137\" 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>Support Board <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7696-critical-php-object-injection-vulnerability-in-wordpress-plugin-integration\/\"  data-wpil-monitor-id=\"70886\">plugin for WordPress<\/a> | All versions up to and including 3.8.0<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability resides in the sb_encryption() function of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4828-arbitrary-file-deletion-vulnerability-in-support-board-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"92265\">Support Board plugin<\/a>. This function uses hardcoded default secrets, which can be exploited by attackers to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52448-critical-authorization-bypass-vulnerability-in-salesforce-tableau-server\/\"  data-wpil-monitor-id=\"68830\">bypass authorization<\/a>. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46835-high-risk-vulnerability-in-git-gui-allows-unauthorized-file-overwrite\/\"  data-wpil-monitor-id=\"66814\">vulnerability allows<\/a> unauthenticated attackers to execute arbitrary AJAX actions defined in the sb_ajax_execute() function. This could enable an attacker to exploit CVE-2025-4828 and other <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27214-missing-authentication-for-critical-function-vulnerability-in-unifi-connect-ev-station-pro\/\"  data-wpil-monitor-id=\"82106\">functions without authentication<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1038744447\" 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>Below is a conceptual example of how this vulnerability might be exploited. An attacker could craft malicious HTTP requests that use the hardcoded secrets to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52446-authorization-bypass-vulnerability-in-salesforce-tableau-server\/\"  data-wpil-monitor-id=\"70353\">bypass the authorization<\/a> process.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-admin\/admin-ajax.php?action=sb_ajax_execute HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nsb_encryption_key=hardcoded_secret&amp;sb_action=malicious_action&amp;sb_data=malicious_data<\/code><\/pre>\n<p><strong>Mitigation and Recommendations<\/strong><\/p>\n<p>To mitigate this vulnerability, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5821-critical-authentication-bypass-vulnerability-in-case-theme-user-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"83261\">users of the affected plugin<\/a> should apply the vendor patch as soon as possible. Until the patch is applied, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50738-memos-application-vulnerability-allows-for-unauthorized-user-information-disclosure\/\"  data-wpil-monitor-id=\"69617\">users can use a Web Application<\/a> Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure.<br \/>\nIt is also recommended to regularly update all software and plugins to their latest versions. Regular monitoring and auditing of system logs can help in early detection of any <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5835-droip-plugin-for-wordpress-unauthorized-access-and-modification-vulnerability\/\"  data-wpil-monitor-id=\"68932\">unauthorized access<\/a> attempts.<br \/>\nIn the longer term, developers should avoid the use of hardcoded secrets in their code, as they present an inherent security risk. Instead, the use of dynamic secrets or secure secret <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52187-critical-cross-site-scripting-xss-vulnerability-in-getprojectsidea-create-school-management-system-1-0\/\"  data-wpil-monitor-id=\"70354\">management systems<\/a> should be considered.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview This blog post shines a light on a critical vulnerability &#8211; CVE-2025-4855, that resides in the Support Board plugin for WordPress. This vulnerability could potentially compromise the security of numerous WordPress websites, by allowing unauthorized access, modification, or deletion of data. It is crucial for system administrators, website owners, and cybersecurity professionals to understand [&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":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59406","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59406","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=59406"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59406\/revisions"}],"predecessor-version":[{"id":85481,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59406\/revisions\/85481"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59406"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59406"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59406"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59406"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59406"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59406"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}