{"id":58443,"date":"2025-07-08T17:04:20","date_gmt":"2025-07-08T17:04:20","guid":{"rendered":""},"modified":"2025-08-29T05:20:05","modified_gmt":"2025-08-29T11:20:05","slug":"cve-2025-30382-untrusted-data-deserialization-vulnerability-in-microsoft-office-sharepoint","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-30382-untrusted-data-deserialization-vulnerability-in-microsoft-office-sharepoint\/","title":{"rendered":"<strong>CVE-2025-30382: Untrusted Data Deserialization Vulnerability in Microsoft Office SharePoint<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The CVE-2025-30382 is a serious vulnerability that affects Microsoft Office SharePoint, a widely used web application platform for businesses around the globe. It involves the deserialization of untrusted data, which can allow an unauthorized attacker to execute code locally. Given SharePoint&#8217;s integral role in many business operations, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53093-critical-security-vulnerability-in-tabberneue-mediawiki-extension\/\"  data-wpil-monitor-id=\"65707\">vulnerability poses a significant security<\/a> risk. If exploited, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52717-sql-injection-vulnerability-in-lifterlms-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"65387\">vulnerability could potentially compromise entire systems or lead<\/a> to data leakage. Therefore, it is <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6615-critical-buffer-overflow-vulnerability-in-d-link-dir-619l-2-06b01\/\"  data-wpil-monitor-id=\"65066\">critical to understand this vulnerability<\/a>, its potential impacts, and how to mitigate it.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-30382<br \/>\nSeverity: High (7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: System compromise or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53495-unauthorized-access-data-leakage-in-wikimedia-foundation-mediawiki-abusefilter-extension\/\"  data-wpil-monitor-id=\"72546\">data leakage<\/a><\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3122145172\" 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-2025-53770-critical-deserialization-vulnerability-in-microsoft-sharepoint-server\/\"  data-wpil-monitor-id=\"70529\">Microsoft Office SharePoint<\/a> | All versions prior to patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of a flaw in the way Microsoft Office SharePoint handles <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52709-high-risk-deserialization-of-untrusted-data-vulnerability-in-everest-forms\/\"  data-wpil-monitor-id=\"65233\">data deserialization<\/a>. <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28970-critical-untrusted-data-deserialization-vulnerability-in-wp-optimize-by-xtraffic\/\"  data-wpil-monitor-id=\"65334\">Deserialization is the process of converting serialized data<\/a> back into its original form. However, if an attacker can inject untrusted data into the deserialization process, they can potentially alter the normal <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53002-remote-code-execution-vulnerability-in-llama-factory\/\"  data-wpil-monitor-id=\"65198\">execution flow or execute arbitrary code<\/a>. In this case, the attacker needs to convince a user to open a malicious SharePoint file, which triggers the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52725-critical-deserialization-of-untrusted-data-vulnerability-in-couponxxl\/\"  data-wpil-monitor-id=\"65216\">deserialization of the untrusted data<\/a> and subsequently allows the attacker to execute code locally.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1296660578\" 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 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42959-unauthenticated-replay-attack-exploiting-hmac-reuse\/\"  data-wpil-monitor-id=\"72547\">attacker might exploit<\/a> this vulnerability. The attacker could embed malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54444-unrestricted-file-upload-leading-to-code-injection-in-samsung-electronics-magicinfo-9-server\/\"  data-wpil-monitor-id=\"70531\">code in a SharePoint file<\/a> and send it to a user. When the user opens the file, the deserialization process is triggered, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5310-remote-code-execution-vulnerability-in-dover-fueling-solutions-progauge-maglink-lx-consoles\/\"  data-wpil-monitor-id=\"65540\">executing the malicious code<\/a>.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/sharepoint\/openfile HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;file&quot;: &quot;malicious_file.sharepoint&quot; }<\/code><\/pre>\n<p>In this example, `malicious_file.sharepoint` is a SharePoint file containing the malicious payload.<br \/>\nPlease note that this is a simplified, hypothetical example and actual exploits may be more complex.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate this vulnerability, users are urged to apply the vendor patch as soon as it becomes available. Until then, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50738-memos-application-vulnerability-allows-for-unauthorized-user-information-disclosure\/\"  data-wpil-monitor-id=\"70530\">users can use a Web Application<\/a> Firewall (WAF) or an Intrusion Detection System (IDS) as temporary mitigation. These <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52817-authorization-bypass-in-zealousweb-abandoned-contact-form-7-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"65764\">systems can help to detect and prevent potential<\/a> attacks. Regularly updating and patching software is also a good practice to enhance <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7096-critical-vulnerability-in-comodo-internet-security-premium-12-3-4-8162\/\"  data-wpil-monitor-id=\"66731\">security and protect against vulnerabilities<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The CVE-2025-30382 is a serious vulnerability that affects Microsoft Office SharePoint, a widely used web application platform for businesses around the globe. It involves the deserialization of untrusted data, which can allow an unauthorized attacker to execute code locally. Given SharePoint&#8217;s integral role in many business operations, this vulnerability poses a significant security risk. [&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":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-58443","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/58443","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=58443"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/58443\/revisions"}],"predecessor-version":[{"id":65316,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/58443\/revisions\/65316"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=58443"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=58443"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=58443"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=58443"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=58443"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=58443"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=58443"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=58443"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=58443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}