Overview
In today’s post, we will be discussing a significant cybersecurity vulnerability identified as CVE-2025-5366. This vulnerability impacts Zohocorp ManageEngine Exchange Reporter Plus, a widely used software in the IT sector for managing and analyzing Microsoft Exchange Servers. This vulnerability is a type of stored Cross-Site Scripting (XSS) attack, which is a common security issue that could potentially allow hackers to inject malicious scripts into web pages viewed by other users. This vulnerability matters because it could potentially compromise a system or result in data leakage if exploited, thereby posing a significant risk to the integrity and confidentiality of data.
Vulnerability Summary
CVE ID: CVE-2025-5366
Severity: High (CVSS Score 8.1)
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Zohocorp ManageEngine Exchange Reporter Plus | Version 5722 and below
How the Exploit Works
The stored XSS vulnerability exists in the ‘Folder-wise read mails with subject’ report functionality of Zohocorp ManageEngine Exchange Reporter Plus. The application does not properly validate or sanitize user-supplied data, which allows remote attackers to inject arbitrary web script or HTML. Since the injected code is permanently stored on the target servers, it will be executed every time the user accesses the affected webpage.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited. This could be a sample HTTP request sent to a vulnerable endpoint.
POST /exchange/reporter/folderwise/readmails HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"subject": "<script>malicious_script_here</script>",
"folder": "Inbox"
}In this example, the malicious script would be stored on the server and executed every time the ‘Folder-wise read mails with subject’ report is viewed.
Mitigation Guidance
To mitigate this vulnerability, users are advised to apply the vendor-released patch. If the patch cannot be applied immediately, users can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation. It is also recommended to always validate and sanitize user-supplied data to prevent such vulnerabilities.