CVE-2025-5366 in Exchange Reporter Plus
Summary
by MITRE • 06/26/2025
Zohocorp ManageEngine Exchange reporter Plus version 5722 and below are vulnerable to Stored XSS in the Folder-wise read mails with subject report.
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Analysis
by VulDB Data Team • 09/30/2025
The vulnerability identified as CVE-2025-5366 affects Zohocorp ManageEngine Exchange Reporter Plus version 5722 and earlier releases, presenting a critical stored cross-site scripting flaw within the Folder-wise read mails with subject report functionality. This vulnerability resides in the web application's handling of user-supplied input within report generation features, creating a persistent security risk that can be exploited by attackers to execute malicious scripts in the context of authenticated users' browsers.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the report generation module. When users create or view Folder-wise read mails with subject reports, the application fails to properly sanitize user-provided data before storing and rendering it in subsequent report displays. This allows attackers to inject malicious javascript code through report parameters or data fields that are subsequently stored in the application's database. The stored nature of this vulnerability means that the malicious payload persists even after the initial injection point, making it particularly dangerous as it can affect multiple users who access the affected reports without requiring repeated exploitation attempts.
The operational impact of CVE-2025-5366 extends beyond simple script execution, potentially enabling attackers to perform a wide range of malicious activities including session hijacking, credential theft, data exfiltration, and privilege escalation within the compromised environment. Attackers can leverage this vulnerability to steal user sessions, access sensitive email data, modify report configurations, or even gain administrative access if the application's privilege model allows such escalation. The vulnerability affects the core functionality of the email reporting system, potentially compromising the integrity of email audit and monitoring processes that organizations rely upon for security compliance and forensic analysis.
Organizations utilizing ManageEngine Exchange Reporter Plus versions 5722 and below face significant risk exposure through this vulnerability, particularly in environments where email security monitoring is critical for compliance requirements. The stored nature of the XSS vulnerability means that even users who do not directly interact with the affected report functionality can be compromised when other users access the malicious reports. This creates a broad attack surface that can be exploited through various attack vectors including phishing campaigns, compromised user accounts, or direct exploitation of the web application interface.
Mitigation strategies for CVE-2025-5366 should prioritize immediate remediation through official vendor patches and updates, as recommended by the software vendor's security advisories. Organizations should implement comprehensive input validation and output encoding mechanisms within their web applications, particularly in report generation and data display modules. Network segmentation and access controls can help limit the potential impact of successful exploitation, while regular security assessments and penetration testing can identify similar vulnerabilities in other application components. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a clear violation of secure coding practices outlined in the OWASP Top Ten. Additionally, this vulnerability can be mapped to ATT&CK technique T1566 which covers social engineering attacks that often leverage XSS vulnerabilities for initial access and persistence within target environments.
The remediation process should include comprehensive testing of the patched application to ensure that the XSS vulnerability has been properly addressed without introducing regressions in functionality. Organizations should also conduct thorough security reviews of similar report generation modules and other web application components that may be susceptible to similar input validation issues. Regular monitoring of security advisories from software vendors and maintaining updated security awareness training for users can help prevent exploitation attempts and ensure rapid response to similar vulnerabilities that may emerge in the future.