{"id":86875,"date":"2026-04-05T13:14:50","date_gmt":"2026-04-05T13:14:50","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-53119-unauthenticated-unrestricted-file-upload-vulnerability","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53119-unauthenticated-unrestricted-file-upload-vulnerability\/","title":{"rendered":"CVE-2025-53119: Unauthenticated Unrestricted File Upload Vulnerability<\/strong>"},"content":{"rendered":"

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

CVE-2025-53119 is a critical security vulnerability that allows an unauthenticated attacker to upload malicious scripts and binaries to the server. This vulnerability is significant due to its potential to compromise systems or lead to data leakage, affecting a broad range of products and applications. The severity of this vulnerability underscores the importance of appropriate cybersecurity measures and timely patch application.<\/p>\n

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

CVE ID: CVE-2025-53119
\nSeverity: High (CVSS 7.5)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise or data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

[Product 1] | [Version 1.x]
\n[Product 2] | [Version 2.x]<\/p>\n

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

The vulnerability exploits unauthenticated file uploads to a server. An attacker can exploit this flaw by uploading malicious scripts or binaries to the server without any form of authentication. Once uploaded, these malicious files can be executed on the server, potentially leading to system compromise or data leakage.<\/p>\n

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

POST \/unprotected\/upload HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/octet-stream\nContent-Disposition: form-data; name=\"file\"; filename=\"exploit.bin\"\n{ \"malicious_binary\": \"...\" }<\/code><\/pre>\n
This conceptual example shows how an attacker might send a malicious binary file to the server via an unprotected upload endpoint. This exploit would be successful if the server does not require authentication for file uploads and does not properly validate or sanitize the uploaded files. Once the malicious file is on the server, the attacker could execute it to compromise the system or exfiltrate data.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate this vulnerability, vendors should release and apply patches that fix the unrestricted file upload flaw. In the interim, employing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation. These systems can block or alert on suspicious file upload activities, helping to prevent exploitation of this vulnerability.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-53119 is a critical security vulnerability that allows an unauthenticated attacker to upload malicious scripts and binaries to the server. This vulnerability is significant due to its potential to compromise systems or lead to data leakage, affecting a broad range of products and applications. The severity of this vulnerability underscores the importance of appropriate […]<\/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":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86875","post","type-post","status-publish","format-standard","hentry"],"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