{"id":73446,"date":"2025-09-10T00:29:50","date_gmt":"2025-09-10T00:29:50","guid":{"rendered":""},"modified":"2025-10-10T04:34:24","modified_gmt":"2025-10-10T10:34:24","slug":"cve-2025-53691-deserialization-of-untrusted-data-vulnerability-in-sitecore-experience-manager-and-platform","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53691-deserialization-of-untrusted-data-vulnerability-in-sitecore-experience-manager-and-platform\/","title":{"rendered":"<strong>CVE-2025-53691: Deserialization of Untrusted Data Vulnerability in Sitecore Experience Manager and Platform<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The vulnerability, CVE-2025-53691, is a significant security risk that impacts certain versions of Sitecore Experience Manager (XM) and Sitecore Experience Platform (XP). These popular content management systems are used by many businesses worldwide, and the vulnerability allows for Remote Code Execution (RCE), potentially leading to system compromise or data leaks. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24775-high-severity-unrestricted-file-upload-vulnerability-in-made-i-t-forms\/\"  data-wpil-monitor-id=\"83076\">severity of this vulnerability<\/a>, coupled with the wide usage of these programs, underscores the urgency for immediate action and mitigation.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-53691<br \/>\nSeverity: High (8.8 CVSS v3.1)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2022-45134-critical-vulnerability-in-mahara-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"82945\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2110455543\" 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>Sitecore Experience Manager (XM) | 9.0 to 9.3, 10.0 to 10.4<br \/>\nSitecore Experience Platform (XP) | 9.0 to 9.3, 10.0 to 10.4<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-51055-insecure-data-storage-vulnerability-in-vedo-suite-version-2024-17\/\"  data-wpil-monitor-id=\"81565\">vulnerability arises from the deserialization of untrusted data<\/a>. Deserialization is the process of converting a stream of bytes back into a copy of the original object. In this case, an attacker can exploit the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53786-microsoft-exchange-server-security-vulnerability-in-hybrid-deployments\/\"  data-wpil-monitor-id=\"81280\">vulnerability by sending maliciously crafted data to the server<\/a>, which is then deserialized and executed. This allows the attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54948-pre-authenticated-remote-code-execution-vulnerability-in-trend-micro-apex-one\/\"  data-wpil-monitor-id=\"81143\">execute arbitrary code<\/a> on the server and potentially gain control over the system or leak data.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-346436390\" 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 simplified and hypothetical example of how the vulnerability might be exploited. The attacker sends a POST <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49382-cross-site-request-forgery-vulnerability-in-jobzilla-wordpress-theme\/\"  data-wpil-monitor-id=\"81153\">request with a malicious payload to a vulnerable<\/a> endpoint.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/vulnerable\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;malicious_payload&quot;: &quot;Serialized_Object_That_Executes_Malicious_Code_When_Deserialized&quot; }<\/code><\/pre>\n<p>In this conceptual example, the &#8220;malicious_payload&#8221; is a serialized object that, when deserialized by the server, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40739-code-execution-vulnerability-in-solid-edge-se2025\/\"  data-wpil-monitor-id=\"81548\">executes malicious code<\/a>. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-23316-critical-vulnerability-in-nvidia-triton-inference-server-leading-to-remote-code-execution\/\"  data-wpil-monitor-id=\"89544\">code could do anything that the server<\/a> has permission to do, which might include accessing, modifying, or deleting data, or even taking control of the server.<\/p>\n<p><strong>How to Mitigate the Vulnerability<\/strong><\/p>\n<p>The recommended way to mitigate this vulnerability is to apply the patch provided by the vendor, Sitecore. This patch fixes the vulnerability at the source and prevents it from being exploited. If the patch cannot be applied immediately, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary measure to detect and block <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46414-unlimited-pin-attempts-vulnerability-in-api\/\"  data-wpil-monitor-id=\"81178\">attempts to exploit this vulnerability<\/a>. However, these are only stopgap measures and the patch should be applied as soon as <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54742-data-deserialization-vulnerability-in-wpevently-leading-to-possible-system-compromise\/\"  data-wpil-monitor-id=\"86364\">possible to fully secure your systems<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The vulnerability, CVE-2025-53691, is a significant security risk that impacts certain versions of Sitecore Experience Manager (XM) and Sitecore Experience Platform (XP). These popular content management systems are used by many businesses worldwide, and the vulnerability allows for Remote Code Execution (RCE), potentially leading to system compromise or data leaks. The severity of this [&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-73446","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\/73446","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=73446"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/73446\/revisions"}],"predecessor-version":[{"id":82389,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/73446\/revisions\/82389"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=73446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=73446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=73446"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=73446"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=73446"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=73446"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=73446"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=73446"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=73446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}