CVE-2025-7523 is a security vulnerability identified in Jinher OA version 1.0, specifically affecting an unknown functionality within the file /c6/Jhsoft.Web.message/ToolBar/DelTemp.aspx. The vulnerability is classified as an XML External Entity (XXE) reference issue. XXE vulnerabilities arise when XML input containing a reference to an external entity is processed by a weakly configured XML parser. This can lead to unauthorized disclosure of internal files, server-side request forgery (SSRF), denial of service (DoS), or other impacts depending on the XML parser's capabilities and the application's context. In this case, the vulnerability allows remote attackers to manipulate XML input to trigger external entity references without requiring authentication or user interaction. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the network attack vector, low complexity, no privileges or user interaction required, and limited impact on confidentiality, integrity, and availability. The vulnerability is publicly disclosed, but no known exploits are currently reported in the wild. The affected product, Jinher OA, is an office automation system used for enterprise management and workflow automation. The specific file implicated suggests the vulnerability may be triggered during operations related to temporary data deletion or toolbar messaging features. Given the nature of XXE, attackers could potentially access sensitive internal files or cause disruptions remotely, posing risks to data confidentiality and system stability.

For European organizations using Jinher OA 1.0, this vulnerability could lead to unauthorized disclosure of sensitive internal documents or configuration files, potentially exposing confidential business information or credentials. The ability to launch the attack remotely without authentication increases the risk of exploitation by external threat actors. While the impact on integrity and availability is rated low to limited, attackers could leverage the vulnerability to perform reconnaissance, pivot within the network, or cause denial of service conditions if the XML parser is overwhelmed. Organizations in sectors with stringent data protection requirements, such as finance, healthcare, and government, could face compliance risks and reputational damage if sensitive data is leaked. Additionally, the public disclosure of the vulnerability may attract opportunistic attackers, increasing the urgency for mitigation. The medium severity rating indicates that while the threat is not critical, it is significant enough to warrant prompt attention to prevent exploitation.

European organizations should immediately assess their use of Jinher OA 1.0 and prioritize upgrading to a patched version once available from the vendor. In the absence of an official patch, organizations can implement the following mitigations: 1) Disable or restrict XML external entity processing in the XML parser configuration used by Jinher OA, effectively preventing XXE exploitation. 2) Employ web application firewalls (WAFs) with rules designed to detect and block malicious XML payloads containing external entity references. 3) Conduct input validation and sanitization on XML inputs to reject or neutralize external entity declarations. 4) Monitor application logs for unusual XML processing errors or unexpected outbound network requests indicative of exploitation attempts. 5) Isolate Jinher OA servers within segmented network zones with strict egress controls to limit potential data exfiltration. 6) Educate IT and security teams about the vulnerability and ensure incident response plans include detection and remediation steps for XXE attacks. These targeted actions go beyond generic advice by focusing on configuration hardening, network controls, and proactive monitoring specific to the nature of the vulnerability and the affected product.