{"id":30075,"date":"2025-04-23T19:58:31","date_gmt":"2025-04-23T19:58:31","guid":{"rendered":""},"modified":"2025-06-09T05:06:49","modified_gmt":"2025-06-09T11:06:49","slug":"cve-2025-32433-unauthenticated-remote-code-execution-vulnerability-in-erlang-otp-ssh-server","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-32433-unauthenticated-remote-code-execution-vulnerability-in-erlang-otp-ssh-server\/","title":{"rendered":"<strong>CVE-2025-32433: Unauthenticated Remote Code Execution Vulnerability in Erlang\/OTP SSH Server<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The Common Vulnerabilities and Exposures (CVE) system has identified a critical security vulnerability, CVE-2025-32433, affecting older versions of Erlang\/OTP, a widely-used set of libraries for the Erlang programming language. This vulnerability could enable a malicious actor to execute arbitrary commands on an affected system without valid authentication, potentially leading to system compromise or data leakage. It is significant <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32309-potential-system-compromise-due-to-remote-file-inclusion-in-php-program\/\"  data-wpil-monitor-id=\"56257\">due to the severity of the potential<\/a> impact and the widespread use of Erlang\/OTP across a myriad of applications and services.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-32433<br \/>\nSeverity: Critical (CVSS 10.0)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2007-wordpress-plugin-vulnerability-leads-to-arbitrary-file-deletion-and-potential-system-compromise\/\"  data-wpil-monitor-id=\"34614\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3849059682\" 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>Erlang\/OTP | Prior to OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-48251-remote-authentication-vulnerability-in-ssh-services\/\"  data-wpil-monitor-id=\"34587\">vulnerability lies in the SSH<\/a> server component of the Erlang\/OTP libraries. An attacker can exploit a flaw in the SSH protocol message handling to gain unauthorized access to affected systems and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-51073-arbitrary-code-execution-vulnerability-in-buffalo-ls210d\/\"  data-wpil-monitor-id=\"34508\">execute arbitrary<\/a> commands without valid credentials. This flaw allows for unauthenticated <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-48262-remote-denial-of-service-and-potential-remote-code-execution-vulnerability\/\"  data-wpil-monitor-id=\"34295\">remote code execution<\/a> (RCE), which could lead to full system control in the hands of an attacker.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1694005409\" 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>While the specifics of the exploit are not provided to prevent misuse, a conceptual example of an SSH-based exploit might look like this:<\/p>\n<pre><code class=\"\" data-line=\"\">ssh -o ProxyCommand=&#039;echo -e &quot;malicious_payload\\n&quot;&#039; target_user@target_host<\/code><\/pre>\n<p>In this example, the attacker uses the SSH option `-o ProxyCommand` to launch a malicious payload that exploits the flawed SSH protocol message handling, enabling the attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28137-critical-pre-auth-remote-command-execution-vulnerability-in-totolink-a810r\/\"  data-wpil-monitor-id=\"34761\">execute arbitrary commands<\/a> on the target host without valid credentials.<\/p>\n<p><strong>Mitigation and Recommendations<\/strong><\/p>\n<p>Affected users are strongly advised to upgrade to the patched versions OTP-27.3.3, OTP-26.2.5.11, or OTP-25.3.2.20 as soon as possible. If immediate upgrade is not possible, a temporary workaround involves disabling the SSH <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32834-exploiting-telecontrol-server-basic-via-sql-injection\/\"  data-wpil-monitor-id=\"38833\">server or preventing access via<\/a> firewall rules.<br \/>\nAdditionally, implementing a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can offer temporary mitigation. However, these measures do not eliminate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50123-exploitable-vulnerability-in-hozard-alarm-system-sms-authentication\/\"  data-wpil-monitor-id=\"34937\">vulnerability but can help detect and possibly prevent exploitation<\/a> attempts.<br \/>\nRemember, the best defense against this and other <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22900-stack-overflow-vulnerability-in-totolink-n600r-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"35198\">vulnerabilities is to keep systems<\/a> and software up-to-date, monitor for suspicious activity, and implement strong, layered security controls.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The Common Vulnerabilities and Exposures (CVE) system has identified a critical security vulnerability, CVE-2025-32433, affecting older versions of Erlang\/OTP, a widely-used set of libraries for the Erlang programming language. This vulnerability could enable a malicious actor to execute arbitrary commands on an affected system without valid authentication, potentially leading to system compromise or data [&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-30075","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\/30075","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=30075"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/30075\/revisions"}],"predecessor-version":[{"id":50270,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/30075\/revisions\/50270"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=30075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=30075"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=30075"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=30075"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=30075"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=30075"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=30075"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=30075"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=30075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}