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 authentication or user interaction. The CVSS 4.0 base score of 6.9 (medium severity) reflects that the attack vector is network-based (AV:N), with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N). The impact on confidentiality, integrity, and availability is rated as low, indicating limited but non-negligible potential damage. The vulnerability affects an unknown portion of the code in the specified file, and no official patches or mitigations have been published yet. Although no known exploits are currently active in the wild, the public disclosure of the exploit code increases the risk of exploitation. The vulnerability is significant because Jinher OA is an enterprise office automation software used for managing organizational workflows, schedules, and documents, which may contain sensitive business information. Exploiting this XXE flaw could allow attackers to access internal files or network resources, potentially leading to data leakage or further network penetration.

For European organizations using Jinher OA 1.2, this vulnerability poses a risk of unauthorized data exposure and potential disruption of business operations. Since the flaw allows remote exploitation without authentication, attackers could leverage it to access sensitive internal documents or configuration files, undermining confidentiality. The integrity and availability impacts are lower but still present, as attackers might manipulate XML processing to disrupt scheduling functions or cause application instability. Given that office automation systems often integrate with other enterprise systems, a successful attack could serve as a foothold for lateral movement within corporate networks. This is particularly concerning for sectors with strict data protection regulations such as GDPR, where data breaches can result in significant legal and financial penalties. Additionally, the lack of available patches means organizations must rely on compensating controls, increasing operational risk. The public availability of exploit code further elevates the threat level, as less sophisticated attackers may attempt exploitation. Organizations in Europe with Jinher OA deployments should prioritize assessment and mitigation to prevent potential data breaches and operational impacts.

1. Immediate mitigation should include disabling or restricting XML input processing in the ProjectScheduleDelete.aspx component if feasible, or applying input validation to reject XML containing external entity declarations. 2. Implement network-level controls such as web application firewalls (WAFs) configured to detect and block XXE attack patterns targeting the affected endpoint. 3. Restrict outbound network access from the Jinher OA server to prevent SSRF or data exfiltration attempts via external entity resolution. 4. Conduct thorough code review and testing to identify and remediate all XML parsing routines that may be vulnerable to XXE. 5. Monitor logs for unusual XML payloads or error messages indicative of exploitation attempts. 6. Engage with the vendor or community to obtain patches or updates as they become available, and plan for prompt deployment. 7. As a longer-term measure, consider upgrading to newer versions of Jinher OA that address this vulnerability or migrating to alternative solutions with stronger security postures. 8. Educate IT and security teams about XXE risks and detection techniques to enhance incident response readiness.