{"id":64210,"date":"2025-08-21T07:12:16","date_gmt":"2025-08-21T07:12:16","guid":{"rendered":""},"modified":"2025-08-31T11:54:21","modified_gmt":"2025-08-31T17:54:21","slug":"cve-2025-54693-critical-web-shell-upload-vulnerability-in-epiphyt-form-block","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54693-critical-web-shell-upload-vulnerability-in-epiphyt-form-block\/","title":{"rendered":"CVE-2025-54693: Critical Web Shell Upload Vulnerability in epiphyt Form Block<\/strong>"},"content":{"rendered":"

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

CVE-2025-54693 is a highly critical severity vulnerability that affects the epiphyt Form Block up to version 1.5.5. It is an Unrestricted Upload of File with Dangerous Type vulnerability that could potentially allow an attacker to upload a Web Shell to a Web Server. This vulnerability is of great concern as it carries the risk<\/a> of system compromise and potential data leakage. Web administrators and webmasters using epiphyt Form<\/a> Block must be aware of this threat and take immediate action to reduce the risk associated with this vulnerability.<\/p>\n

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

CVE ID: CVE-2025-54693
\nSeverity: Critical (CVSS: 9.0)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system<\/a> compromise, data leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

epiphyt Form Block | up to 1.5.5<\/p>\n

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

The vulnerability arises due<\/a> to improper validation of file uploads in the epiphyt Form Block. As a result, an attacker can upload a Web Shell, which is a script that can be uploaded to a web server to enable remote access<\/a> to the server. Once the malicious file is uploaded and executed, it can compromise the entire system, thereby potentially allowing unauthorized access to sensitive data<\/a>, system resources, and network traffic.<\/p>\n

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

Here is a conceptual example of how the vulnerability might be exploited. In this case, the attacker sends a POST request<\/a> to the vulnerable endpoint with a malicious payload (web shell):<\/p>\n

POST \/vulnerable\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: multipart\/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW\n------WebKitFormBoundary7MA4YWxkTrZu0gW\nContent-Disposition: form-data; name=\"file\"; filename=\"webshell.php\"\nContent-Type: application\/x-php\n\n------WebKitFormBoundary7MA4YWxkTrZu0gW--<\/code><\/pre>\n
The above HTTP request uploads a PHP web shell that can execute arbitrary<\/a> OS commands based on the input provided in the ‘cmd’ GET parameter. This allows the attacker to control the system<\/a> remotely.<\/p>\n
Mitigation<\/strong><\/p>\n
The best way to mitigate this vulnerability is to apply the vendor’s patch as soon as it becomes available. In the meantime, users can implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to help prevent exploitation of this vulnerability. It is also recommended to disable file uploads<\/a> or limit them to certain trusted types and users, as well as regularly updating and patching all systems and software.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-54693 is a highly critical severity vulnerability that affects the epiphyt Form Block up to version 1.5.5. It is an Unrestricted Upload of File with Dangerous Type vulnerability that could potentially allow an attacker to upload a Web Shell to a Web Server. This vulnerability is of great concern as it carries the risk […]<\/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-64210","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