{"id":64183,"date":"2025-08-20T04:02:11","date_gmt":"2025-08-20T04:02:11","guid":{"rendered":""},"modified":"2025-11-03T09:09:43","modified_gmt":"2025-11-03T15:09:43","slug":"cve-2025-43982-hidden-hard-coded-root-account-in-shenzhen-tuoshi-nr500-ea-devices","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-43982-hidden-hard-coded-root-account-in-shenzhen-tuoshi-nr500-ea-devices\/","title":{"rendered":"<strong>CVE-2025-43982: Hidden Hard-coded Root Account in Shenzhen Tuoshi NR500-EA Devices<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity community is shifting its focus to a new vulnerability discovered in Shenzhen Tuoshi NR500-EA RG500UEAABxCOMSLICv3.4.2731.16.43 devices. By default, these devices enable the Secure Shell (SSH) service and also contain a hidden hard-coded root account that cannot be disabled via the Graphical User Interface (GUI). This poses a significant threat to the integrity, confidentiality, and availability of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42966-sap-netweaver-xml-data-archiving-service-java-deserialization-vulnerability\/\"  data-wpil-monitor-id=\"80620\">data and services<\/a> running on these devices. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24777-deserialization-of-untrusted-data-vulnerability-in-awethemes-hillter\/\"  data-wpil-monitor-id=\"73021\">vulnerability&#8217;s potential to facilitate system compromise or data<\/a> leakage places it among the critical cybersecurity concerns that need immediate attention.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-43982<br \/>\nSeverity: Critical (9.8 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-50160-heap-based-buffer-overflow-in-windows-rras-posing-system-compromise-risk\/\"  data-wpil-monitor-id=\"78627\">System compromise<\/a> and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3323576608\" 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>Shenzhen Tuoshi NR500-EA RG500UEAABxCOMSLICv3.4.2731.16.43 | All versions<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47986-universal-print-management-service-exploit-elevates-privileges\/\"  data-wpil-monitor-id=\"92305\">exploit takes advantage of the SSH service<\/a> that is enabled by default in the Shenzhen Tuoshi NR500-EA devices. An attacker can gain <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53499-critical-unauthorized-access-vulnerability-in-wikimedia-foundation-mediawiki-abusefilter-extension\/\"  data-wpil-monitor-id=\"72868\">unauthorized access<\/a> to the device by using the hidden hard-coded root account, which cannot be disabled through the device GUI. Once the attacker gains access, they can execute arbitrary commands as the root user, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40741-stack-based-overflow-vulnerability-in-solid-edge-se2025-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"75877\">leading to full system<\/a> compromise.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1823735619\" 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 SSH <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-51390-command-injection-vulnerability-in-totolink-n600r\/\"  data-wpil-monitor-id=\"73778\">command demonstrates how an attacker might exploit the vulnerability:<\/a><\/p>\n<pre><code class=\"\" data-line=\"\">ssh root@target_device_ip\n# The attacker enters the hard-coded password here.\npassword: hardcoded_password\n# Once authenticated, the attacker has root access.<\/code><\/pre>\n<p>This conceptual command <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47168-use-after-free-vulnerability-in-microsoft-office-word-allowing-unauthorized-code-execution\/\"  data-wpil-monitor-id=\"73200\">allows the attacker to gain unauthorized<\/a> access to the device. From there, they can navigate through the file system, modify configurations, and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43220-unprecedented-data-access-vulnerability-in-multiple-macos-and-ipados-versions\/\"  data-wpil-monitor-id=\"73243\">access sensitive data<\/a>.<\/p>\n<p><strong>Mitigation Measures<\/strong><\/p>\n<p>The primary mitigation measure is to apply the vendor patch as soon as it becomes available. If the patch is not yet available or cannot be applied immediately, users are advised to use a Web Application Firewall (WAF) or Intrusion Detection Systems (IDS) as temporary mitigation. These tools can help to identify and block <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46414-unlimited-pin-attempts-vulnerability-in-api\/\"  data-wpil-monitor-id=\"81274\">attempts to exploit the vulnerability<\/a>.<br \/>\nFinally, users should consider disabling the SSH service if it is not strictly necessary for the operation of the device. This could help to reduce the attack surface until a more permanent solution can be implemented.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity community is shifting its focus to a new vulnerability discovered in Shenzhen Tuoshi NR500-EA RG500UEAABxCOMSLICv3.4.2731.16.43 devices. By default, these devices enable the Secure Shell (SSH) service and also contain a hidden hard-coded root account that cannot be disabled via the Graphical User Interface (GUI). This poses a significant threat to the integrity, [&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":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-64183","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/64183","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=64183"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/64183\/revisions"}],"predecessor-version":[{"id":85527,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/64183\/revisions\/85527"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=64183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=64183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=64183"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=64183"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=64183"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=64183"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=64183"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=64183"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=64183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}