{"id":71221,"date":"2025-09-04T08:44:02","date_gmt":"2025-09-04T08:44:02","guid":{"rendered":""},"modified":"2025-10-20T15:23:07","modified_gmt":"2025-10-20T21:23:07","slug":"cve-2025-55583-critical-unauthenticated-os-command-injection-vulnerability-in-d-link-dir-868l-b1-router-firmware","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-55583-critical-unauthenticated-os-command-injection-vulnerability-in-d-link-dir-868l-b1-router-firmware\/","title":{"rendered":"<strong>CVE-2025-55583: Critical Unauthenticated OS Command Injection Vulnerability in D-Link DIR-868L B1 Router Firmware<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity world is no stranger to vulnerabilities, but CVE-2025-55583 is one that holds a particularly high risk. This vulnerability resides in the D-Link DIR-868L B1 router firmware version FW2.05WWB02. It is an unauthenticated OS command injection <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8356-path-traversal-vulnerability-in-xerox-freeflow-core-leading-to-remote-code-execution\/\"  data-wpil-monitor-id=\"78842\">vulnerability that can be exploited remotely<\/a>, making it a critical issue for users and IT administrators. As routers form the backbone of internet connectivity in homes and businesses alike, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24775-high-severity-unrestricted-file-upload-vulnerability-in-made-i-t-forms\/\"  data-wpil-monitor-id=\"83083\">severity of this vulnerability<\/a> cannot be understated. A successful exploit could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49759-sql-injection-vulnerability-in-sql-server-potentially-enabling-privilege-escalation-and-data-leakage\/\"  data-wpil-monitor-id=\"79163\">potentially compromise the system or even lead to data<\/a> leakage, thus posing a massive privacy and security threat.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-55583<br \/>\nSeverity: Critical (9.8\/10)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42957-critical-backdoor-vulnerability-in-sap-s-4hana-exposes-systems-to-potential-compromise\/\"  data-wpil-monitor-id=\"79590\">Potential system<\/a> compromise, data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-96017090\" 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>D-Link DIR-868L B1 Router | FW2.05WWB02<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit takes advantage of an unauthenticated OS command <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7384-php-object-injection-vulnerability-in-wordpress-plugin-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"79016\">injection vulnerability<\/a> in the fileaccess.cgi component of the D-Link DIR-868L B1 router firmware. The endpoint \/dws\/api\/UploadFile accepts a pre_api_arg parameter that is directly passed to system-level shell <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41683-authenticated-remote-code-execution-vulnerability-in-main-web-interface\/\"  data-wpil-monitor-id=\"78949\">execution functions without any sanitization or authentication<\/a>. An attacker can craft malicious HTTP requests to this endpoint, allowing them to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46122-arbitrary-command-execution-vulnerability-in-commscope-ruckus-unleashed\/\"  data-wpil-monitor-id=\"78901\">execute arbitrary commands<\/a> as the root user on the system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1037833223\" 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>A conceptual example of how this vulnerability might be exploited is as follows:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/dws\/api\/UploadFile HTTP\/1.1\nHost: vulnerable.router.ip\nContent-Type: application\/json\n{ &quot;pre_api_arg&quot;: &quot;; rm -rf \/;&quot; }<\/code><\/pre>\n<p>In this example, the attacker is using the &#8220;pre_api_arg&#8221; parameter to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8748-critical-command-injection-vulnerability-in-mir-software\/\"  data-wpil-monitor-id=\"79550\">inject a malicious command<\/a> (; rm -rf \/;) that would delete all files in the system. This is purely illustrative and demonstrates the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55731-sql-injection-vulnerability-in-frappe-framework-leading-to-potential-data-leakage\/\"  data-wpil-monitor-id=\"79261\">potential severity of the vulnerability<\/a>.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Users are advised to apply the vendor patch as soon as possible to mitigate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-55293-high-risk-vulnerability-in-meshtastic-s-mesh-networking-solution\/\"  data-wpil-monitor-id=\"81337\">risk of this vulnerability<\/a>. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation, blocking <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-7457-macos-authorization-model-exploit-leading-to-potential-mitm-attacks\/\"  data-wpil-monitor-id=\"79962\">potential exploit<\/a> attempts. As always, keeping your systems and applications updated with the latest patches and security fixes is the most effective way to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43728-protection-mechanism-failure-vulnerability-in-dell-thinos\/\"  data-wpil-monitor-id=\"90248\">protect against vulnerabilities<\/a> like CVE-2025-55583.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity world is no stranger to vulnerabilities, but CVE-2025-55583 is one that holds a particularly high risk. This vulnerability resides in the D-Link DIR-868L B1 router firmware version FW2.05WWB02. It is an unauthenticated OS command injection vulnerability that can be exploited remotely, making it a critical issue for users and IT administrators. As [&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":[78],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-71221","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-injection"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71221","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=71221"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71221\/revisions"}],"predecessor-version":[{"id":83188,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/71221\/revisions\/83188"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=71221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=71221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=71221"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=71221"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=71221"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=71221"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=71221"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=71221"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=71221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}