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CVE-2025-5966: CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') in ManageEngine Exchange Reporter Plus

High
VulnerabilityCVE-2025-5966cvecve-2025-5966cwe-79
Published: Thu Jun 26 2025 (06/26/2025, 12:22:10 UTC)
Source: CVE Database V5
Vendor/Project: ManageEngine
Product: Exchange Reporter Plus

Description

Zohocorp ManageEngine Exchange reporter Plus version 5722 and below are vulnerable to Stored XSS in the Attachments by filename keyword report.

AI-Powered Analysis

AILast updated: 06/26/2025, 12:50:02 UTC

Technical Analysis

CVE-2025-5966 is a high-severity vulnerability classified under CWE-79, indicating an improper neutralization of input during web page generation, commonly known as Cross-site Scripting (XSS). This vulnerability affects ManageEngine Exchange Reporter Plus, specifically version 5722 and earlier. The flaw exists in the 'Attachments by filename keyword' report feature, where user-supplied input is not properly sanitized before being rendered in the web interface. This leads to a Stored XSS condition, meaning malicious scripts injected by an attacker are permanently stored on the server and executed in the browsers of users who view the affected report. The CVSS 3.1 base score is 8.1, reflecting a high impact on confidentiality and integrity, with no impact on availability. The attack vector is network-based (AV:N), requiring no privileges (PR:N), but user interaction is necessary (UI:R) as the victim must view the malicious report. The scope is unchanged (S:U), meaning the vulnerability affects only the vulnerable component. Exploitation could allow attackers to execute arbitrary JavaScript in the context of the victim’s browser session, potentially leading to session hijacking, credential theft, or unauthorized actions within the Exchange Reporter Plus application. Although no known exploits are reported in the wild yet, the vulnerability’s nature and high CVSS score suggest it is a significant risk if left unpatched. The lack of available patches at the time of publication increases the urgency for mitigation measures.

Potential Impact

For European organizations, this vulnerability poses a considerable risk, especially for those relying on ManageEngine Exchange Reporter Plus for monitoring and reporting on Microsoft Exchange environments. Successful exploitation could compromise sensitive email metadata and reporting data, leading to leakage of confidential information or unauthorized manipulation of reports. Given the integration of Exchange Reporter Plus in IT operations, attackers could leverage this XSS to escalate attacks within the corporate network, potentially targeting privileged users such as system administrators. The confidentiality and integrity of organizational data are at risk, which could lead to regulatory compliance issues under GDPR if personal or sensitive data is exposed. Additionally, the attack could facilitate further phishing or social engineering campaigns by injecting malicious content into trusted internal tools. The requirement for user interaction means that awareness and training can reduce risk, but the persistent nature of stored XSS means that multiple users could be affected over time.

Mitigation Recommendations

Immediate mitigation should focus on restricting access to the vulnerable report feature and implementing strict input validation and output encoding on all user-supplied data fields, particularly the 'Attachments by filename keyword' input. Organizations should monitor and audit usage of the Exchange Reporter Plus reports for unusual or unexpected inputs. Applying any forthcoming patches from ManageEngine as soon as they are released is critical. In the interim, deploying Web Application Firewalls (WAFs) with custom rules to detect and block typical XSS payloads targeting this component can reduce exposure. Additionally, enforcing Content Security Policy (CSP) headers can help mitigate the impact of injected scripts. User training to recognize suspicious behavior and limiting the number of users with access to report generation can also reduce risk. Regular backups and incident response plans should be updated to include scenarios involving web interface compromise.

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Technical Details

Data Version
5.1
Assigner Short Name
Zohocorp
Date Reserved
2025-06-10T09:25:22.467Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 685d3e71ca1063fb87418b73

Added to database: 6/26/2025, 12:34:57 PM

Last enriched: 6/26/2025, 12:50:02 PM

Last updated: 8/17/2025, 8:56:18 AM

Views: 38

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