{"id":54010,"date":"2025-06-22T07:14:21","date_gmt":"2025-06-22T07:14:21","guid":{"rendered":""},"modified":"2025-10-03T12:32:26","modified_gmt":"2025-10-03T18:32:26","slug":"cve-2025-49091-remote-code-execution-due-to-kde-konsole-url-scheme-handler-vulnerability","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-49091-remote-code-execution-due-to-kde-konsole-url-scheme-handler-vulnerability\/","title":{"rendered":"<strong>CVE-2025-49091: Remote Code Execution due to KDE Konsole URL Scheme Handler Vulnerability<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The KDE Konsole, a popular terminal emulator for the KDE desktop environment, has a notable vulnerability identified as CVE-2025-49091. This vulnerability affects KDE Konsole versions prior to 25.04.2. The risk is significant due to the remote code execution capability it provides to potential attackers, posing a substantial threat to both personal and enterprise <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5901-buffer-overflow-vulnerability-in-totolink-t10-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"60611\">systems running vulnerable<\/a> versions of KDE Konsole. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30220-high-severity-xml-external-entity-xxe-vulnerability-in-geoserver-geotools-and-geonetwork\/\"  data-wpil-monitor-id=\"60610\">severity of this vulnerability<\/a> underscores the importance of regular software updates and vigilant cybersecurity measures.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-49091<br \/>\nSeverity: High (8.2\/10)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-40912-critical-vulnerability-in-cryptx-for-perl-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"60922\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-926001378\" 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>KDE Konsole | <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49137-critical-vulnerability-in-hax-cms-php-prior-to-version-11-0-0\/\"  data-wpil-monitor-id=\"63621\">Versions prior<\/a> to 25.04.2<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-47030-critical-vulnerability-in-ncr-terminal-handler-allows-remote-code-execution\/\"  data-wpil-monitor-id=\"63620\">vulnerability lies in KDE Konsole&#8217;s handling of URL scheme handlers<\/a> such as ssh:\/\/, telnet:\/\/, or rlogin:\/\/. When a URL with such a scheme is loaded, there is a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47163-unauthorized-code-execution-through-microsoft-sharepoint-deserialization-vulnerability\/\"  data-wpil-monitor-id=\"60952\">code path where it attempts to execute<\/a> the respective binaries (ssh, telnet, or rlogin). However, if these binaries are not available, Konsole defaults to using \/bin\/bash for the given arguments, which in this case would be the URL provided. This creates a situation where an attacker could provide a malicious URL that, when loaded in KDE Konsole, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5491-acer-controlcenter-remote-code-execution-vulnerability-potential-system-compromise\/\"  data-wpil-monitor-id=\"61219\">executes arbitrary code on the system<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-945274308\" 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>Given the nature of this vulnerability, an example <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5353-local-authenticated-attacker-exploit-in-ivanti-workspace-control\/\"  data-wpil-monitor-id=\"60921\">exploit could involve an attacker<\/a> tricking a user into loading a malicious URL in KDE Konsole. The URL could contain bash <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-41661-unauthenticated-remote-command-execution-vulnerability-due-to-csrf-in-main-web-interface\/\"  data-wpil-monitor-id=\"61134\">commands that exploit the vulnerability<\/a>.<\/p>\n<pre><code class=\"\" data-line=\"\">ssh:\/\/;$({malicious_command})<\/code><\/pre>\n<p>When loaded in the KDE Konsole of a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5978-critical-vulnerability-in-tenda-fh1202-1-2-0-14-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"61061\">vulnerable system<\/a>, this URL could cause arbitrary command execution. The precise nature of the malicious command would depend on the attacker&#8217;s objectives, such as gaining <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49136-critical-vulnerability-in-listmonk-allows-unauthorized-access-to-sensitive-environment-variables\/\"  data-wpil-monitor-id=\"60396\">unauthorized access<\/a>, exfiltrating data, or disrupting system operations.<br \/>\nPlease note that this is a conceptual example meant for educational purposes. Attempting to exploit <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43698-critical-permissions-vulnerability-in-salesforce-omnistudio\/\"  data-wpil-monitor-id=\"60419\">vulnerabilities without permission<\/a> is illegal and unethical.<\/p>\n<p><strong>Mitigation and Remediation<\/strong><\/p>\n<p>Users are strongly advised to update their KDE Konsole to version 25.04.2 or later, which <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52890-critical-acl-bypass-vulnerability-in-incus-system-container-and-virtual-machine-manager\/\"  data-wpil-monitor-id=\"64751\">contains a patch for this vulnerability<\/a>. If immediate patching is not possible, use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may provide temporary mitigation by blocking or alerting on suspicious URLs. However, these measures are not a substitute for applying the vendor&#8217;s patch. Always practice good <a href=\"https:\/\/www.ameeba.com\/blog\/introducing-the-ameeba-cybersecurity-group-chat\/\"  data-wpil-monitor-id=\"88407\">cybersecurity<\/a> habits, including regular software updates and caution with unfamiliar URLs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The KDE Konsole, a popular terminal emulator for the KDE desktop environment, has a notable vulnerability identified as CVE-2025-49091. This vulnerability affects KDE Konsole versions prior to 25.04.2. The risk is significant due to the remote code execution capability it provides to potential attackers, posing a substantial threat to both personal and enterprise systems [&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":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-54010","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54010","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=54010"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54010\/revisions"}],"predecessor-version":[{"id":81219,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/54010\/revisions\/81219"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=54010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=54010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=54010"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=54010"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=54010"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=54010"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=54010"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=54010"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=54010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}