CVE-2025-7523 is a security vulnerability identified in Jinher OA version 1.0, specifically within the file /c6/Jhsoft.Web.message/ToolBar/DelTemp.aspx. The vulnerability is an XML External Entity (XXE) reference flaw, which arises when an application processes XML input containing external entity references without proper validation or sanitization. This allows an attacker to craft malicious XML payloads that can cause the application to disclose internal files, perform server-side request forgery (SSRF), or potentially execute arbitrary code depending on the environment and XML parser configuration. The vulnerability is remotely exploitable without requiring authentication or user interaction, making it a significant risk. The CVSS 4.0 score is 6.9 (medium severity), reflecting the network attack vector, low complexity, no privileges or user interaction needed, and limited impact on confidentiality, integrity, and availability. Although no known exploits are currently in the wild, the public disclosure of the exploit details increases the risk of exploitation. The affected product, Jinher OA, is an office automation system used for enterprise resource planning and workflow management, which may contain sensitive organizational data and internal communications. The vulnerability's exploitation could lead to unauthorized data disclosure and potentially facilitate further attacks within the affected environment.

For European organizations using Jinher OA 1.0, this vulnerability poses a risk of unauthorized access to sensitive internal files and data leakage through XXE exploitation. Given that Jinher OA is used for office automation and workflow management, attackers could gain access to confidential business information, employee data, or internal communications. This could lead to reputational damage, regulatory non-compliance (e.g., GDPR violations), and financial losses. Additionally, successful exploitation could serve as a foothold for lateral movement or further compromise within the network. The remote and unauthenticated nature of the vulnerability increases the risk profile, especially for organizations exposing the affected endpoint to the internet or untrusted networks. However, the medium severity rating and limited impact on integrity and availability suggest that while data confidentiality is at risk, full system compromise or denial of service is less likely without additional vulnerabilities.

European organizations should prioritize the following mitigation steps: 1) Immediate upgrade or patching: Although no official patch links are provided, organizations should contact Jinher for updates or apply any available patches addressing CVE-2025-7523. 2) Input validation and XML parser hardening: Implement strict input validation to reject XML payloads containing external entity references. Configure XML parsers to disable external entity processing (e.g., disable DTD processing) to prevent XXE exploitation. 3) Network segmentation and access control: Restrict access to the affected endpoint (/c6/Jhsoft.Web.message/ToolBar/DelTemp.aspx) to trusted internal networks only, minimizing exposure to external attackers. 4) Monitoring and detection: Deploy web application firewalls (WAFs) with rules to detect and block XXE attack patterns. Monitor logs for suspicious XML payloads or unusual access patterns to the vulnerable endpoint. 5) Incident response preparedness: Develop and test incident response plans to quickly contain and remediate any exploitation attempts. 6) Vendor engagement: Engage with Jinher to obtain security advisories, patches, and guidance on secure configurations. These measures go beyond generic advice by focusing on XML parser configuration, network controls, and proactive detection tailored to the specific vulnerability and product.