{"id":38308,"date":"2025-05-15T08:57:18","date_gmt":"2025-05-15T08:57:18","guid":{"rendered":""},"modified":"2025-09-29T02:50:28","modified_gmt":"2025-09-29T08:50:28","slug":"cve-2025-29813-authentication-bypass-vulnerability-in-azure-devops","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-29813-authentication-bypass-vulnerability-in-azure-devops\/","title":{"rendered":"<strong>CVE-2025-29813: Authentication Bypass Vulnerability in Azure DevOps<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The vulnerability titled CVE-2025-29813 pertains to Azure DevOps, a suite of development tools, services, and features provided by Microsoft. This vulnerability is significant due to the potential for an unauthorized attacker to bypass authentication by exploiting assumed-immutable data, thus leading to a possible escalation of privileges over a network. Given the widespread use of Azure DevOps, the impact of this vulnerability is far-reaching, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49129-stack-overflow-vulnerability-in-solid-edge-se2023-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"43531\">potentially affecting numerous organizations and systems<\/a> worldwide.<br \/>\nThe seriousness of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-11186-severe-access-control-vulnerability-in-cloudvision-portal\/\"  data-wpil-monitor-id=\"44989\">vulnerability is underscored by its CVSS Severity<\/a> Score of 10.0, denoting the highest level of severity. The implications of a successful exploit could result in <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4372-webaudio-heap-corruption-in-google-chrome-a-potential-gateway-to-system-compromise-and-data-leakage\/\"  data-wpil-monitor-id=\"43810\">system compromise or data<\/a> leakage, posing a significant risk to system integrity and data confidentiality.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-29813<br \/>\nSeverity: Critical (10.0)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-30165-potential-system-compromise-in-vllm-v0-engine\/\"  data-wpil-monitor-id=\"44032\">System compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2989834570\" 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>Azure DevOps | All <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47269-session-token-exposure-in-code-server-prior-to-version-4-99-4\/\"  data-wpil-monitor-id=\"46767\">versions prior<\/a> to patch<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/global-honeypot-creation-exploits-cisco-flaw-unmasking-the-vicioustrap-attack\/\"  data-wpil-monitor-id=\"50997\">exploit works by leveraging a flaw<\/a> in the authentication process of Azure DevOps. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-7032-security-flaw-allowing-privilege-escalation-through-untrusted-data-deserialization\/\"  data-wpil-monitor-id=\"47542\">flaw lies in the handling of data<\/a> assumed to be immutable during the authentication process. An unauthorized attacker can manipulate this data to spoof identity claims, thus <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1909-authentication-bypass-vulnerability-in-buddyboss-platform-pro-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"43197\">bypassing the authentication<\/a> mechanism. This can lead to an elevation of privileges over a network, providing unauthorized access to resources and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4050-heap-corruption-in-google-chrome-devtools-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"43078\">potentially compromising the system or leading<\/a> to data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1376732293\" 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>Here is a conceptual example of how the vulnerability might be exploited. This example showcases a malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4827-critical-buffer-overflow-vulnerability-in-totolink-http-post-request-handler\/\"  data-wpil-monitor-id=\"50998\">HTTP request<\/a>, which could be used to manipulate the assumed-immutable data:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/vulnerable\/authentication\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;immutable_data&quot;: &quot;Spoofed_identity_claim&quot; }<\/code><\/pre>\n<p>In this example, &#8220;immutable_data&#8221; is the assumed-immutable data that the authentication mechanism relies on, and &#8220;Spoofed_identity_claim&#8221; is the manipulated data that the attacker uses to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45607-authentication-bypass-vulnerability-in-itranswarp-v2-19-management-component\/\"  data-wpil-monitor-id=\"43279\">bypass authentication<\/a>.<\/p>\n<p><strong>Mitigations<\/strong><\/p>\n<p>Users are advised to apply the vendor patch as soon as <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54742-data-deserialization-vulnerability-in-wpevently-leading-to-possible-system-compromise\/\"  data-wpil-monitor-id=\"86451\">possible to mitigate this vulnerability<\/a>. Until the patch can be applied, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5485-a-critical-vulnerability-pertaining-to-user-name-enumeration-in-web-management-interfaces\/\"  data-wpil-monitor-id=\"86452\">users should consider implementing a Web<\/a> Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can help detect and prevent unauthorized access attempts, thus minimizing the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4347-d-link-router-buffer-overflow-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"43592\">potential impact of the vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The vulnerability titled CVE-2025-29813 pertains to Azure DevOps, a suite of development tools, services, and features provided by Microsoft. This vulnerability is significant due to the potential for an unauthorized attacker to bypass authentication by exploiting assumed-immutable data, thus leading to a possible escalation of privileges over a network. Given the widespread use of [&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":[82],"product":[],"attack_vector":[75],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-38308","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-microsoft","attack_vector-authentication-bypass"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38308","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=38308"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38308\/revisions"}],"predecessor-version":[{"id":79246,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38308\/revisions\/79246"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=38308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=38308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=38308"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=38308"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=38308"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=38308"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=38308"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=38308"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=38308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}