{"id":85012,"date":"2025-10-29T14:42:10","date_gmt":"2025-10-29T14:42:10","guid":{"rendered":""},"modified":"2025-11-01T11:53:57","modified_gmt":"2025-11-01T17:53:57","slug":"cve-2025-32325-heap-buffer-overflow-vulnerability-in-parcel-cpp-leading-to-privilege-escalation","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-32325-heap-buffer-overflow-vulnerability-in-parcel-cpp-leading-to-privilege-escalation\/","title":{"rendered":"<strong>CVE-2025-32325: Heap Buffer Overflow Vulnerability in Parcel.cpp Leading to Privilege Escalation<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The vulnerability CVE-2025-32325 is a critical security flaw identified in the appendFrom function of Parcel.cpp. This vulnerability could potentially be exploited to perform an out of bounds write due to a heap buffer overflow, resulting in a local escalation of privilege. This vulnerability is especially concerning as it does not require additional execution privileges or user interaction to be exploited, posing a significant threat to any <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30385-critical-privilege-escalation-vulnerability-in-windows-common-log-file-system-driver\/\"  data-wpil-monitor-id=\"91840\">system running the vulnerable<\/a> software.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-32325<br \/>\nSeverity: High (7.8 CVSS)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5692-unauthorized-data-modification-and-privilege-escalation-in-wordpress-lead-form-data-collection-to-crm-plugin\/\"  data-wpil-monitor-id=\"92036\">Privilege escalation<\/a>, potential system compromise, and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1193323325\" 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>Parcel.cpp | All versions prior to patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability resides in the appendFrom function of Parcel.cpp. When this function is invoked, it may lead to a heap <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20684-potential-escalation-of-privilege-in-wlan-ap-driver\/\"  data-wpil-monitor-id=\"91931\">buffer overflow<\/a> due to insufficient bounds checking. This overflow can then be exploited to write data outside of the intended memory boundaries, potentially leading to a corruption of useful data, crashing of the system, or in worst cases, execution of arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30383-type-confusion-vulnerability-in-microsoft-office-excel-leading-to-unauthorized-code-execution\/\"  data-wpil-monitor-id=\"91857\">code leading<\/a> to privilege escalation.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-860830638\" 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>While the specific method to exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42963-critical-vulnerability-in-sap-netweaver-application-server-allows-system-compromise\/\"  data-wpil-monitor-id=\"91910\">vulnerability would largely depend on the system<\/a> and the environment in which Parcel.cpp is deployed, a conceptual example might look like this:<\/p>\n<pre><code class=\"\" data-line=\"\">Parcel parcel;\nbyte* buffer = new byte[OVERFLOW_SIZE]; \/\/ OVERFLOW_SIZE is larger than the parcel buffer.\nparcel.appendFrom(buffer, 0, OVERFLOW_SIZE); \/\/ This leads to a buffer overflow.<\/code><\/pre>\n<p>In the above pseudocode, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29979-heap-based-buffer-overflow-vulnerability-in-microsoft-office-excel\/\"  data-wpil-monitor-id=\"92127\">OVERFLOW_SIZE is a size larger than the buffer<\/a> size of the &#8216;parcel&#8217; object. This leads to an overflow when the &#8216;appendFrom&#8217; function is called, causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30376-heap-based-buffer-overflow-in-microsoft-office-excel-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"91948\">buffer overflow<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The vulnerability CVE-2025-32325 is a critical security flaw identified in the appendFrom function of Parcel.cpp. This vulnerability could potentially be exploited to perform an out of bounds write due to a heap buffer overflow, resulting in a local escalation of privilege. This vulnerability is especially concerning as it does not require additional execution privileges [&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":[86,76],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-85012","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-privilege-escalation"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85012","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=85012"}],"version-history":[{"count":7,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85012\/revisions"}],"predecessor-version":[{"id":85337,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/85012\/revisions\/85337"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=85012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=85012"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=85012"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=85012"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=85012"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=85012"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=85012"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=85012"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=85012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}