CVE-2025-7823 is a security vulnerability identified in Jinher OA version 1.2, specifically within the ProjectScheduleDelete.aspx component. The vulnerability is classified as an XML External Entity (XXE) reference issue. XXE vulnerabilities occur when an application processes XML input containing references to external entities, which can be exploited by attackers to read arbitrary files, perform server-side request forgery (SSRF), or cause denial of service (DoS) conditions. In this case, the vulnerability allows remote attackers to manipulate XML input to trigger external entity references without requiring any authentication or user interaction. The CVSS 4.0 score is 6.9, indicating a medium severity level, with attack vector being network-based (AV:N), low attack complexity (AC:L), no privileges or user interaction required (PR:N, UI:N), and partial impacts on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). The vulnerability affects unknown code within the specified file, suggesting that the XML parser or processing logic does not properly validate or sanitize XML input, leading to the XXE condition. Although no public exploits are currently known to be in the wild, the disclosure of the vulnerability and its exploitability over the network make it a credible threat. The lack of available patches or mitigations from the vendor at this time increases the risk for organizations using Jinher OA 1.2. Overall, this vulnerability could allow attackers to access sensitive internal files, perform unauthorized network requests, or disrupt service availability remotely, making it a significant concern for affected deployments.

For European organizations using Jinher OA 1.2, this vulnerability poses a tangible risk to confidentiality, integrity, and availability of their information systems. Exploitation could lead to unauthorized disclosure of sensitive corporate data or internal configuration files, potentially exposing intellectual property or personal data protected under GDPR. The ability to perform SSRF attacks could allow attackers to pivot within internal networks, targeting other critical infrastructure or services. Additionally, service disruption through DoS could impact business continuity. Given the remote exploitability without authentication, attackers can target exposed Jinher OA web interfaces directly over the internet or internal networks. This is particularly concerning for organizations in sectors with high regulatory requirements or sensitive data, such as finance, healthcare, and government agencies across Europe. The medium severity rating suggests that while the vulnerability is serious, exploitation may require some specific conditions or may not lead to full system compromise. Nonetheless, the potential for data leakage and network reconnaissance makes it a priority for risk management in affected environments.

To mitigate this vulnerability effectively, European organizations should: 1) Immediately audit their environments to identify any deployments of Jinher OA version 1.2, especially those exposed to external networks. 2) Implement network-level controls such as web application firewalls (WAFs) with rules to detect and block malicious XML payloads containing external entity references. 3) Restrict outbound network access from application servers to prevent SSRF exploitation, limiting connections to only necessary destinations. 4) If possible, disable XML external entity processing in the application or underlying XML parsers as a configuration change until a vendor patch is available. 5) Monitor logs for unusual XML processing errors or unexpected outbound requests originating from the Jinher OA server. 6) Engage with the vendor for updates or patches and plan for prompt application once released. 7) Conduct internal penetration testing focusing on XXE attack vectors to validate the effectiveness of mitigations. These steps go beyond generic advice by focusing on immediate compensating controls and proactive detection tailored to the nature of the vulnerability and the affected product.