{"id":56753,"date":"2025-07-03T06:11:03","date_gmt":"2025-07-03T06:11:03","guid":{"rendered":""},"modified":"2025-09-07T11:38:39","modified_gmt":"2025-09-07T17:38:39","slug":"cve-2025-6734-critical-buffer-overflow-vulnerability-in-utt-hiper-840g","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6734-critical-buffer-overflow-vulnerability-in-utt-hiper-840g\/","title":{"rendered":"<strong>CVE-2025-6734: Critical Buffer Overflow Vulnerability in UTT HiPER 840G<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is continually evolving, with new vulnerabilities appearing frequently. One such vulnerability that has recently come to light is CVE-2025-6734. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4200-critical-local-file-inclusion-vulnerability-in-zagg-electronics-accessories-woocommerce-wordpress-theme\/\"  data-wpil-monitor-id=\"63170\">critical vulnerability<\/a> is found in UTT HiPER 840G up to version 3.1.1-190328 and poses a significant risk to users of this product.<br \/>\nThe <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-4994-critical-csrf-vulnerability-in-gitlab-s-graphql-api-leading-to-arbitrary-graphql-mutations\/\"  data-wpil-monitor-id=\"63728\">vulnerability affects the API<\/a> component of the UTT HiPER 840G, specifically the function sub_484E40 of the file \/goform\/formP2PLimitConfig. The problem arises due to a manipulable argument leading to buffer overflow, which could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32878-critical-vulnerability-in-coros-pace-3-devices-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"63193\">potentially allow a remote attacker to compromise the system<\/a> or leak sensitive data.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6734<br \/>\nSeverity: Critical, CVSS Severity Score 8.8<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6370-critical-vulnerability-in-d-link-dir-619l-2-06b01-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"63387\">Potential system<\/a> compromise, data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-136306498\" 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-2025-6733-critical-buffer-overflow-vulnerability-in-utt-hiper-840g\/\"  data-wpil-monitor-id=\"65067\">UTT HiPER<\/a> 840G | up to 3.1.1-190328<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24761-severe-php-local-file-inclusion-vulnerability-in-snstheme-dsk\/\"  data-wpil-monitor-id=\"63166\">vulnerability resides in the function sub_484E40 of the file<\/a> \/goform\/formP2PLimitConfig in the API component of the UTT HiPER 840G. It stems from a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6369-critical-buffer-overflow-vulnerability-in-d-link-dir-619l\/\"  data-wpil-monitor-id=\"63431\">buffer overflow<\/a> condition that occurs when the &#8216;except&#8217; argument is manipulated. This can lead to an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6368-critical-stack-based-buffer-overflow-vulnerability-in-d-link-dir-619l\/\"  data-wpil-monitor-id=\"63436\">overflow of the data buffer<\/a>, and since the system does not correctly validate the size of the input, an attacker can overflow the buffer with arbitrary code.<br \/>\nThis <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32710-critical-use-after-free-vulnerability-in-windows-remote-desktop-services\/\"  data-wpil-monitor-id=\"63243\">vulnerability can be exploited remotely<\/a> without any user interaction or elevated privileges. Once the buffer overflow occurs, the attacker can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49132-critical-arbitrary-code-execution-vulnerability-in-pterodactyl-game-server-management-panel\/\"  data-wpil-monitor-id=\"63270\">execute arbitrary code<\/a> with the privileges of the process, leading to system compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-4144292605\" 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>The following conceptual example illustrates a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-7457-macos-authorization-model-exploit-leading-to-potential-mitm-attacks\/\"  data-wpil-monitor-id=\"80055\">potential exploit<\/a> scenario. Note that this is a simplified representation and actual exploitation would require more complex code.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/formP2PLimitConfig HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nexcept=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...<\/code><\/pre>\n<p>In this example, the &#8216;except&#8217; argument is overloaded with a large number of &#8216;A&#8217; characters, which could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6371-critical-buffer-overflow-vulnerability-in-d-link-dir-619l-2-06b01\/\"  data-wpil-monitor-id=\"63491\">overflow the buffer<\/a> and potentially allow the execution of arbitrary code.<br \/>\nTo mitigate this vulnerability, users are advised to apply the vendor&#8217;s patch as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may provide temporary mitigation against potential exploits.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is continually evolving, with new vulnerabilities appearing frequently. One such vulnerability that has recently come to light is CVE-2025-6734. This critical vulnerability is found in UTT HiPER 840G up to version 3.1.1-190328 and poses a significant risk to users of this product. The vulnerability affects the API component of the UTT [&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],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-56753","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56753","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=56753"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56753\/revisions"}],"predecessor-version":[{"id":72472,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56753\/revisions\/72472"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=56753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=56753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=56753"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=56753"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=56753"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=56753"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=56753"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=56753"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=56753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}