{"id":56752,"date":"2025-07-03T05:10:34","date_gmt":"2025-07-03T05:10:34","guid":{"rendered":""},"modified":"2025-08-07T17:19:43","modified_gmt":"2025-08-07T23:19:43","slug":"cve-2025-6733-critical-buffer-overflow-vulnerability-in-utt-hiper-840g","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6733-critical-buffer-overflow-vulnerability-in-utt-hiper-840g\/","title":{"rendered":"<strong>CVE-2025-6733: Critical Buffer Overflow Vulnerability in UTT HiPER 840G<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the cybersecurity landscape, the discovery of a new vulnerability always raises concerns. A recent one that has caught attention is CVE-2025-6733, a critical buffer overflow vulnerability found in UTT HiPER 840G up to version 3.1.1-190328. This <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=\"63194\">vulnerability affects the API component of the device<\/a>, particularly the function sub_416928 of the file \/goform\/formConfigDnsFilterGlobal. The manipulation of the argument GroupName can lead to a buffer overflow, which could <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=\"63388\">potentially cause severe damage to the integrity of the system<\/a>.<br \/>\nThis <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24761-severe-php-local-file-inclusion-vulnerability-in-snstheme-dsk\/\"  data-wpil-monitor-id=\"63167\">vulnerability is of significant concern due to its severity<\/a> and the fact that the exploit has been publicly disclosed. This means that <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6510-critical-vulnerability-in-netgear-ex6100-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"63646\">potential attackers are aware of the vulnerability<\/a> and can exploit it. The vendor was notified about this issue, but they haven&#8217;t responded yet, heightening the risk.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6733<br \/>\nSeverity: Critical &#8211; CVSS 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-2025-5866-critical-vulnerability-in-rt-thread-5-1-0-potentially-leading-to-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"63823\">Potential system compromise and data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-4038815649\" 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-2025-6734-critical-buffer-overflow-vulnerability-in-utt-hiper-840g\/\"  data-wpil-monitor-id=\"65072\">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-2025-4200-critical-local-file-inclusion-vulnerability-in-zagg-electronics-accessories-woocommerce-wordpress-theme\/\"  data-wpil-monitor-id=\"63171\">vulnerability resides within the function sub_416928 of the file<\/a> \/goform\/formConfigDnsFilterGlobal. When a remote attacker sends specially crafted input to the GroupName argument of this function, it triggers a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6369-critical-buffer-overflow-vulnerability-in-d-link-dir-619l\/\"  data-wpil-monitor-id=\"63432\">buffer overflow<\/a>. This overflow can cause the system&#8217;s memory to be overwritten, potentially leading to <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=\"63271\">arbitrary code execution<\/a>, system crashes, and data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2910235543\" 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&#8217;s a conceptual example of how the vulnerability might be exploited. Note that this is for illustrative purposes only:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/goform\/formConfigDnsFilterGlobal HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;GroupName&quot;: &quot;A&quot;*10000 }<\/code><\/pre>\n<p>In this example, the GroupName argument is filled with a string of &#8216;A&#8217; characters that exceed the buffer&#8217;s capacity, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7805-critical-vulnerability-in-tenda-fh451-1-0-0-9-leading-to-remote-buffer-overflow-attacks\/\"  data-wpil-monitor-id=\"67656\">leading to overflow<\/a>.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate the risk <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22236-minion-event-bus-authorization-bypass-vulnerability-posing-serious-security-threats\/\"  data-wpil-monitor-id=\"63328\">posed by this vulnerability<\/a>, users are advised to apply the vendor patch as soon as it\u2019s available. Until then, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be employed as temporary mitigation measures. These <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-20599-unauthorized-access-to-crypto-co-processor-registers-in-asp-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"64244\">systems can help detect and prevent potential<\/a> exploit attempts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the cybersecurity landscape, the discovery of a new vulnerability always raises concerns. A recent one that has caught attention is CVE-2025-6733, a critical buffer overflow vulnerability found in UTT HiPER 840G up to version 3.1.1-190328. This vulnerability affects the API component of the device, particularly the function sub_416928 of the file \/goform\/formConfigDnsFilterGlobal. The [&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":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-56752","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56752","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=56752"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56752\/revisions"}],"predecessor-version":[{"id":61320,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/56752\/revisions\/61320"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=56752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=56752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=56752"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=56752"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=56752"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=56752"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=56752"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=56752"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=56752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}