{"id":59829,"date":"2025-08-02T17:35:47","date_gmt":"2025-08-02T17:35:47","guid":{"rendered":""},"modified":"2025-10-20T15:23:13","modified_gmt":"2025-10-20T21:23:13","slug":"cve-2025-31700-buffer-overflow-vulnerability-in-dahua-products","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-31700-buffer-overflow-vulnerability-in-dahua-products\/","title":{"rendered":"<strong>CVE-2025-31700: Buffer Overflow Vulnerability in Dahua Products<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The CVE-2025-31700 is a critical security vulnerability discovered in the Dahua products. This vulnerability, if exploited, could potentially disrupt services or even execute remote code without user interaction. Given the widespread use of Dahua products, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20217-denial-of-service-vulnerability-in-snort-3-detection-engine-of-cisco-secure-firewall-threat-defense-software\/\"  data-wpil-monitor-id=\"76992\">vulnerability poses a significant threat<\/a> to organizations and individuals alike, making it pertinent to understand its intricacies, potential impacts, and the steps required for mitigation.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-31700<br \/>\nSeverity: High (8.1 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: Possible <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21432-memory-corruption-vulnerability-resulting-in-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"76993\">system compromise and data<\/a> leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2438058373\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p>Dahua DVR | All versions<br \/>\nDahua IP Camera | All versions<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-53076-critical-overread-buffers-vulnerability-in-samsung-s-rlottie\/\"  data-wpil-monitor-id=\"66259\">buffer overflow vulnerability<\/a> in Dahua products. Attackers can send specially crafted malicious packets to the device, causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8168-critical-buffer-overflow-vulnerability-in-d-link-dir-513-1-10\/\"  data-wpil-monitor-id=\"67112\">buffer overflow<\/a>. This could lead to service disruption, such as crashes, or even <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-26074-remote-code-execution-vulnerability-in-orkes-conductor-v3-21-11\/\"  data-wpil-monitor-id=\"66260\">remote code execution<\/a> (RCE). While some devices may have <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43728-protection-mechanism-failure-vulnerability-in-dell-thinos\/\"  data-wpil-monitor-id=\"90264\">protection mechanisms<\/a> like Address Space Layout Randomization (ASLR) decreasing the chances of successful RCE exploitation, denial-of-service (DoS) attacks are still a viable threat.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2104549582\" 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>This is a conceptual example of what a malicious packet might look like. This is not a real exploit code, but is designed to illustrate the concept of a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47998-severe-heap-based-buffer-overflow-vulnerability-in-windows-routing-and-remote-access-service\/\"  data-wpil-monitor-id=\"67309\">buffer overflow<\/a> attack.<\/p>\n<pre><code class=\"\" data-line=\"\">$ echo -e &quot;GET \/ HTTP\/1.1\\r\\nHost: vulnerabledevice\\r\\n$(python -c &#039;print &quot;A&quot;*5000&#039;)\\r\\n\\r\\n&quot; | nc vulnerabledevice 80<\/code><\/pre>\n<p>This conceptual example sends a GET request with an overly long header value, potentially causing a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8159-critical-remote-buffer-overflow-vulnerability-in-d-link-dir-513-1-0\/\"  data-wpil-monitor-id=\"67367\">buffer overflow<\/a> in the Dahua device. Here, &#8216;A&#8217;*5000 symbolizes a string of arbitrary length designed to <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=\"67657\">overflow the buffer<\/a>. The nc <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7097-critical-command-injection-vulnerability-in-comodo-internet-security-premium\/\"  data-wpil-monitor-id=\"68424\">command sends this request to the vulnerable<\/a> device.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31701-buffer-overflow-vulnerability-in-dahua-products\/\"  data-wpil-monitor-id=\"68423\">Dahua has released a vendor patch that fixes this vulnerability<\/a>, and it is strongly recommended for all users to apply this patch immediately. If the patch cannot be applied right away, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31100-unrestricted-file-upload-leads-to-web-shell-deployment-in-mojoomla-school-management\/\"  data-wpil-monitor-id=\"84725\">deploying a Web<\/a> Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as a temporary mitigation. These systems can detect and block malicious packets, preventing an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42959-unauthenticated-replay-attack-exploiting-hmac-reuse\/\"  data-wpil-monitor-id=\"76994\">attacker from exploiting<\/a> this vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The CVE-2025-31700 is a critical security vulnerability discovered in the Dahua products. This vulnerability, if exploited, could potentially disrupt services or even execute remote code without user interaction. Given the widespread use of Dahua products, this vulnerability poses a significant threat to organizations and individuals alike, making it pertinent to understand its intricacies, potential [&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":[86,87,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59829","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-dos","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59829","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=59829"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59829\/revisions"}],"predecessor-version":[{"id":83204,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59829\/revisions\/83204"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59829"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59829"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59829"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59829"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59829"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59829"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59829"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59829"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}