CVE-2025-9941: Real Estate Management System RCE Flaw

CVE-2025-9941 Overview

CVE-2025-9941 is an unrestricted file upload vulnerability in CodeAstro Real Estate Management System 1.0. The flaw resides in the /register.php script, where the uimage parameter accepts attacker-controlled files without proper validation. Authenticated attackers can submit arbitrary file types through this parameter over the network. The weakness is classified under [CWE-284] Improper Access Control. Public exploit documentation exists on GitHub, increasing the risk of opportunistic abuse against exposed installations.

Critical Impact

Remote attackers with low privileges can upload arbitrary files through register.php, potentially leading to malicious content hosting or further compromise of the underlying web server.

Affected Products

• CodeAstro Real Estate Management System 1.0
• CPE: cpe:2.3:a:codeastro:real_estate_management_system:1.0:*:*:*:*:*:*:*
• Vendor: CodeAstro

Discovery Timeline

• 2025-09-04 - CVE-2025-9941 published to NVD
• 2026-04-29 - Last updated in NVD database

Technical Details for CVE-2025-9941

Vulnerability Analysis

The vulnerability exists in the registration workflow of CodeAstro Real Estate Management System 1.0. The /register.php endpoint processes the uimage parameter, which is intended to accept a profile image during account creation. The application does not enforce restrictions on file type, extension, or content before saving the uploaded file to the web-accessible directory.

An attacker can submit a file with an executable extension or embedded server-side code through the uimage field. Because the upload handler relies on client-supplied metadata, server-side validation is effectively absent. The Exploit Prediction Scoring System places this issue in a lower tier relative to actively exploited flaws, but a public proof of concept is documented in the GitHub CVE write-up.

Root Cause

The root cause is improper access control [CWE-284] over file upload functionality. The register.php handler trusts user-supplied data for the uimage parameter without applying allow-list filtering, MIME verification, or storage hardening.

Attack Vector

The attack is remote and requires low privileges, since registration is the affected workflow itself. An attacker crafts an HTTP POST request to /register.php and supplies a malicious payload in the uimage field. Refer to the GitHub CVE Documentation and VulDB entry #322343 for the documented request structure.

No verified exploit code is republished here. The referenced advisories describe the technique in detail.

Detection Methods for CVE-2025-9941

Indicators of Compromise

• Unexpected files with executable extensions such as .php, .phtml, or .phar written to the directory used for uimage storage.
• HTTP POST requests to /register.php containing Content-Type: multipart/form-data with non-image payloads in the uimage field.
• New web shell access patterns originating from files placed in the user upload directory.

Detection Strategies

• Inspect web server logs for POST requests to /register.php followed by GET requests to uploaded image filenames with non-image extensions.
• Monitor the upload directory for files whose magic bytes do not match common image formats (JPEG, PNG, GIF).
• Apply web application firewall rules that block multipart uploads containing PHP tags or scripting headers.

Monitoring Recommendations

• Centralize HTTP access and error logs from the web server into a SIEM for correlation against file system change events.
• Alert on process creation events spawned by the PHP-FPM or web server user from within the application's upload directory.
• Track outbound connections from the web host that follow recent writes to the upload directory.

How to Mitigate CVE-2025-9941

Immediate Actions Required

• Restrict public access to /register.php until a vendor fix is verified, using network controls or authentication in front of the application.
• Remove execute permissions on the directory that stores files uploaded through the uimage parameter.
• Audit existing uploaded files and remove any that are not legitimate images.

Patch Information

No vendor patch is referenced in the public advisories at the time of writing. Consult the CodeAstro vendor site and the VulDB CTI entry for any updated remediation status.

Workarounds

• Configure the web server to deny script execution within the upload directory using directives such as php_flag engine off or equivalent location-level rules.
• Implement server-side allow-list validation for uimage, accepting only verified MIME types like image/jpeg and image/png.
• Rename uploaded files to randomized identifiers and strip user-supplied extensions before storage.

# Apache configuration example: disable PHP execution in the upload directory
<Directory "/var/www/real_estate/uploads">
    php_flag engine off
    AddType text/plain .php .phtml .phar
    Options -ExecCGI
</Directory>