{"id":79358,"date":"2025-09-29T18:54:31","date_gmt":"2025-09-29T18:54:31","guid":{"rendered":""},"modified":"2025-10-09T23:20:44","modified_gmt":"2025-10-10T05:20:44","slug":"cve-2025-26399-unauthenticated-ajaxproxy-deserialization-remote-code-execution-vulnerability-in-solarwinds-web-help-desk","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-26399-unauthenticated-ajaxproxy-deserialization-remote-code-execution-vulnerability-in-solarwinds-web-help-desk\/","title":{"rendered":"<strong>CVE-2025-26399: Unauthenticated AjaxProxy Deserialization Remote Code Execution Vulnerability in SolarWinds Web Help Desk<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the ever-evolving world of cybersecurity, no software is immune to vulnerabilities. SolarWinds Web Help Desk, a popular IT service management solution, was recently found to be susceptible to a critical vulnerability identified as CVE-2025-26399. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2417-authentication-bypass-vulnerability-in-akinsoft-e-mutabakat\/\"  data-wpil-monitor-id=\"87103\">vulnerability is a patch bypass<\/a> of two previous vulnerabilities CVE-2024-28988 and CVE-2024-28986, signifying its severity and potential impact. The risk it poses to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49401-critical-deserialization-of-untrusted-data-vulnerability-in-expresstech-systems-quiz-and-survey-master\/\"  data-wpil-monitor-id=\"87154\">systems and data<\/a> security makes it an issue of high importance that requires immediate attention by system administrators and IT security personnel.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-26399<br \/>\nSeverity: Critical (9.8)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-36326-bypassing-amd-romarmor-protections-to-compromise-system-security\/\"  data-wpil-monitor-id=\"87864\">System compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1117476007\" 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>SolarWinds Web Help Desk | All versions prior to the patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability stems from a flaw in the AjaxProxy deserialization process, which allows unauthenticated users to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7388-remote-command-execution-via-java-rmi-interface-in-openedge-adminserver\/\"  data-wpil-monitor-id=\"87015\">execute arbitrary commands remotely<\/a> on the host machine. Specifically, an attacker can craft a malicious serialized object that, when deserialized by the AjaxProxy, triggers a chain of events <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47099-heap-based-buffer-overflow-vulnerability-in-incopy-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"86798\">leading to the execution of arbitrary code<\/a>. Since the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1740-excessive-authentication-attempts-vulnerability-in-akinsoft-myrezzta\/\"  data-wpil-monitor-id=\"86766\">vulnerability can be exploited without any form of authentication<\/a>, it opens a wide attack surface that can be leveraged by attackers to compromise the system or exfiltrate sensitive data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2747618049\" 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>Here is a conceptual example of how an attacker might exploit this vulnerability, using a POST <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58833-cross-site-request-forgery-vulnerability-in-invelity-mygls-connect\/\"  data-wpil-monitor-id=\"86988\">request to send a malicious payload to a vulnerable<\/a> endpoint:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/ajaxproxy HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;serialized_object&quot;: &quot;malicious_payload&quot; }<\/code><\/pre>\n<p>In this example, &#8220;malicious_payload&#8221; represents a serialized <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-58280-object-heap-address-exposure-vulnerability-in-ark-ets\/\"  data-wpil-monitor-id=\"87211\">object crafted to exploit the deserialization vulnerability<\/a> in the AjaxProxy. This payload, when processed by the vulnerable application, can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47127-arbitrary-code-execution-vulnerability-in-adobe-framemaker\/\"  data-wpil-monitor-id=\"87063\">execution of arbitrary<\/a> commands on the host machine.<\/p>\n<p><strong>Mitigation and Patching<\/strong><\/p>\n<p>SolarWinds has released a patch to address this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54914-a-critical-elevation-of-privilege-vulnerability-in-azure-networking\/\"  data-wpil-monitor-id=\"87045\">critical vulnerability<\/a>. It is strongly advised that <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-10534-critical-firefox-and-thunderbird-vulnerability-leading-to-possible-system-compromise-and-data-leakage\/\"  data-wpil-monitor-id=\"89453\">system administrators apply this patch as soon as possible<\/a> to prevent potential attacks. In case immediate patching is not feasible, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. However, these should not be seen as long-term solutions, as they may not fully prevent the exploitation of this vulnerability.<br \/>\nIt is crucial to keep in mind that vulnerabilities like CVE-2025-26399 highlight the importance of regular patching and updating of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-25180-underprivileged-software-manipulates-gpu-system-calls-for-unauthorized-access\/\"  data-wpil-monitor-id=\"88743\">software systems<\/a>. Cybersecurity is an ongoing process, and staying ahead of potential threats is key to maintaining a secure IT environment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the ever-evolving world of cybersecurity, no software is immune to vulnerabilities. SolarWinds Web Help Desk, a popular IT service management solution, was recently found to be susceptible to a critical vulnerability identified as CVE-2025-26399. This vulnerability is a patch bypass of two previous vulnerabilities CVE-2024-28988 and CVE-2024-28986, signifying its severity and potential impact. [&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":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-79358","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/79358","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=79358"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/79358\/revisions"}],"predecessor-version":[{"id":82300,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/79358\/revisions\/82300"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=79358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=79358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=79358"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=79358"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=79358"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=79358"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=79358"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=79358"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=79358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}