CVE-2025-10821 is a medium-severity vulnerability identified in version 1.0 of the fuyang_lipengjun platform. The flaw resides in the TopicCategoryController component, specifically within the /topiccategory/queryAll endpoint. This vulnerability is characterized as an improper authorization issue, meaning that the platform fails to correctly enforce access controls on this function. As a result, unauthorized remote attackers can potentially access or manipulate data or functionality that should be restricted. The vulnerability can be exploited remotely without requiring user interaction or prior authentication, which significantly lowers the barrier for exploitation. The CVSS 4.0 vector indicates the attack vector is network-based (AV:N), with low attack complexity (AC:L), no privileges required (PR:L, indicating low privileges but not zero), no user interaction (UI:N), and low impact on confidentiality (VC:L), with no impact on integrity, availability, or other security properties. Although the impact on confidentiality is low and no direct integrity or availability impact is reported, improper authorization can still lead to unauthorized data exposure or unauthorized actions within the platform. The exploit code has been published, increasing the risk of exploitation, although no known exploits are currently observed in the wild. No patches or mitigation links are provided at this time, indicating that organizations using this platform version should prioritize remediation efforts. The vulnerability was published on September 22, 2025, and assigned a medium severity rating based on its CVSS score of 5.3.

For European organizations using the fuyang_lipengjun platform version 1.0, this vulnerability poses a risk of unauthorized access to topic category data or related platform functions. While the confidentiality impact is considered low, improper authorization can lead to exposure of sensitive organizational information or internal categorization data, which could be leveraged for further attacks or espionage. The lack of integrity and availability impact reduces the risk of service disruption or data tampering, but unauthorized data access alone can have compliance and reputational consequences, especially under stringent European data protection regulations such as GDPR. Organizations in sectors handling sensitive or regulated data (e.g., finance, healthcare, government) may face increased risk if this platform is integrated into their systems. The remote exploitability without user interaction or elevated privileges further increases the threat surface, making it easier for attackers to target vulnerable installations from external networks. Given the exploit code is publicly available, the likelihood of opportunistic attacks increases, necessitating prompt action to mitigate risk.

1. Immediate upgrade or patching: Organizations should check with the fuyang_lipengjun platform vendor for any available patches or updated versions that address CVE-2025-10821. If no official patch exists, consider applying custom access control restrictions at the network or application layer to restrict access to the /topiccategory/queryAll endpoint. 2. Access control hardening: Implement strict role-based access controls (RBAC) and ensure that only authorized users or systems can access sensitive API endpoints. 3. Network segmentation and firewall rules: Limit exposure of the vulnerable platform to trusted internal networks or VPNs, blocking external access to the affected endpoint where possible. 4. Monitoring and detection: Deploy logging and monitoring solutions to detect unusual access patterns or unauthorized queries to the /topiccategory/queryAll endpoint. 5. Incident response readiness: Prepare to respond to potential exploitation attempts by having incident response plans and forensic capabilities in place. 6. Vendor engagement: Engage with the vendor to obtain timely updates and security advisories related to this vulnerability. 7. Application-layer gateway or WAF: Use a web application firewall to detect and block unauthorized access attempts targeting this endpoint.