{"id":53826,"date":"2025-06-20T20:56:52","date_gmt":"2025-06-20T20:56:52","guid":{"rendered":""},"modified":"2025-09-03T03:47:24","modified_gmt":"2025-09-03T09:47:24","slug":"cve-2025-25264-critical-vulnerability-allowing-unauthenticated-remote-access-due-to-overly-permissive-cors-policy","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-25264-critical-vulnerability-allowing-unauthenticated-remote-access-due-to-overly-permissive-cors-policy\/","title":{"rendered":"CVE-2025-25264: Critical Vulnerability Allowing Unauthenticated Remote Access due to Overly Permissive CORS Policy<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

Today we are breaking down a critical vulnerability, CVE-2025-25264, which allows an unauthenticated remote attacker to exploit an overly permissive Cross-Origin Resource Sharing (CORS) policy. This vulnerability poses a significant threat to any system that has not yet applied the corresponding patch, potentially leading to serious data leakage or enabling further system compromise. It is of utmost importance that system administrators understand the risks and take action to mitigate this vulnerability<\/a>.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-25264
\nSeverity: Critical, CVSS score 8.8
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise or data<\/a> leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Vendor Product 1 | All versions prior<\/a> to 3.0.1
\nVendor Product 2 | All versions prior<\/a> to 2.1.6<\/p>\n

How the Exploit Works<\/strong><\/p>\n

An attacker can exploit<\/a> this vulnerability by sending a cross-origin HTTP request to a vulnerable application. The overly permissive CORS policy of the affected application allows the attacker to read the responses to these cross-origin requests, potentially exposing sensitive data<\/a> or enabling further attacks. Since the attack can be executed remotely<\/a>, the attacker does not need to authenticate or interact with a user to successfully exploit the vulnerability.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

The following conceptual example demonstrates how an attacker might exploit<\/a> this vulnerability:<\/p>\n

GET \/sensitive\/data HTTP\/1.1\nHost: vulnerable.example.com\nOrigin: attacker.example.com<\/code><\/pre>\n
In this example, the attacker sends a GET request from `attacker.example.com` to `vulnerable.example.com` for a resource that contains sensitive data<\/a>. The vulnerable application’s overly permissive CORS policy<\/a> allows the attacker’s domain to read the response, potentially exposing sensitive data.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate this vulnerability, apply the patch provided by the vendor as soon as possible. If the patch cannot be applied immediately, consider using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block exploitation attempts. Additionally, review and update the application’s CORS policy to ensure that it only allows<\/a> trusted domains to read responses.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview Today we are breaking down a critical vulnerability, CVE-2025-25264, which allows an unauthenticated remote attacker to exploit an overly permissive Cross-Origin Resource Sharing (CORS) policy. This vulnerability poses a significant threat to any system that has not yet applied the corresponding patch, potentially leading to serious data leakage or enabling further system compromise. It […]<\/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,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-53826","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t