2025.06 - Reflected Cross-Site Scripting in MailEnable (CVE-2025-44148)
The CVE-2025-44148 vulnerability in MailEnable is a reflected cross-site scripting (XSS) vulnerability that occurs in the failure.aspx page of versions prior to v10. An attacker can execute the script in the user's session by inserting JavaScript code through a malicious URL. This can lead to risks such as session hijacking, malicious script execution, and phishing attacks.
In our AIWAF product, we are developing patterns to respond to vulnerabilities occurring in MailEnable, and we will respond quickly to vulnerabilities that are discovered in the future.
1. Overview
MailEnable is mail server software used on Windows servers. It provides email sending and receiving capabilities, and supports POP3, SMTP, and IMAP protocols. It also allows email to be used in a browser through its webmail feature. In addition, it is responsible for providing spam protection, antivirus features, groupware features, and more.
This report summarizes our recent analysis of Cross Site Scripting within MailEnable.
Source : https://www.facebook.com/photo/?fbid=451757020309959&set=a.451756946976633
2. Attack type
CVE-2025-44148 is a Cross-Site Scripting (XSS) vulnerability in the failure.aspx page of the MailEnable product. This vulnerability was found in MailEnable v10 and earlier, and could allow an attacker to inject a malicious script via a specially crafted URL, which could result in the script being executed in the user's browser.
For example, by sending a request to failure.aspx with a payload such as <script>alert(1)</script> in the msg parameter, an attacker could perform a variety of attacks, including hijacking a user's session, executing malicious code, or phishing.
The vulnerability is externally accessible without authentication and can affect web interfaces or cloud-based SaaS systems that use MailEnable. The risk is increased when client-side security policies (CSPs) are not in place, especially when API integrations or admin portals mirror user input.
Example attack Request :
GET /Mail/failure.aspx?msg=<script>alert('XSS')</script> HTTP/1.1
Host: victim-domain.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Connection: close
3. Mitigation
A separate patch for the CVE-2025-44148 vulnerability in MailEnable has not yet been released. The current patch recommendation is to upgrade to MailEnable v10 or later, which should be patched after version checking.
In our AIWAF product, we are responding via the 114: Cross Site Scripting(14) pattern.
4. Conclusion
The CVE-2025-44148 vulnerability in MailEnable is a reflexive cross-site scripting (XSS) vulnerability that occurs in the failure.aspx page in v10 and earlier versions of MailEnable. An attacker can inject JavaScript code via a malicious URL and execute that script in the user's session. This can lead to session hijacking, malicious script execution, phishing attacks, and other risks.
Our AIWAF product has developed patterns to respond to vulnerabilities within MailEnable, and we will continue to respond quickly to vulnerabilities as they are discovered.
