CVE-2025-6865 is a Cross-Site Request Forgery (CSRF) vulnerability identified in the DaiCuo software versions up to 1.3.13. The vulnerability specifically affects an unspecified part of the /admin.php/addon/index endpoint. CSRF vulnerabilities allow an attacker to trick an authenticated user into submitting a forged HTTP request to a web application, potentially causing unauthorized actions to be executed without the user's consent. In this case, the attack can be initiated remotely without any prior authentication or privileges, and requires only user interaction (e.g., clicking a malicious link or visiting a crafted webpage). The CVSS 4.0 base score is 5.3, indicating a medium severity level. The vector details show that the attack is network exploitable (AV:N), requires no privileges (PR:N), no user authentication (AT:N), but does require user interaction (UI:P). The impact is limited primarily to integrity (VI:L) with no confidentiality or availability impact. No known exploits are currently observed in the wild, and no patches or mitigations have been explicitly linked yet. The vulnerability is publicly disclosed, which increases the risk of exploitation attempts. CSRF attacks on administrative endpoints can lead to unauthorized changes in application configuration, plugin or addon management, or other sensitive administrative functions, depending on the exact functionality of the affected endpoint. Given the lack of detailed information on the exact parameters or actions affected, the risk is primarily that an attacker could cause an authenticated administrator to unknowingly perform actions that compromise the integrity of the system or its configuration.

For European organizations using DaiCuo, this vulnerability poses a risk of unauthorized administrative actions being performed through CSRF attacks. If an attacker can lure an authenticated administrator to a malicious webpage, they could manipulate the system's addons or configurations, potentially leading to further compromise or disruption of services. While the confidentiality and availability impacts are low, the integrity impact could affect business operations, especially if critical configurations or plugins are altered. Organizations in sectors with strict regulatory requirements (e.g., finance, healthcare, government) could face compliance issues if unauthorized changes lead to data integrity problems or service disruptions. The medium severity score suggests that while the threat is not critical, it should be addressed promptly to prevent exploitation, especially as the vulnerability is publicly disclosed. The lack of known exploits in the wild currently reduces immediate risk but does not eliminate it, as attackers often develop exploits following public disclosure.

European organizations should implement the following specific mitigations: 1) Apply any available patches or updates from DaiCuo as soon as they are released. If no official patch is available, consider temporary workarounds such as implementing CSRF tokens on the affected endpoints or disabling the vulnerable addon management functionality until a fix is available. 2) Restrict access to the /admin.php/addon/index endpoint to trusted IP addresses or VPN users to reduce exposure. 3) Employ web application firewalls (WAFs) with rules designed to detect and block CSRF attack patterns targeting administrative URLs. 4) Educate administrators about the risks of CSRF and advise them to avoid clicking on suspicious links or visiting untrusted websites while logged into the DaiCuo admin interface. 5) Monitor logs for unusual or unauthorized administrative actions that could indicate exploitation attempts. 6) Consider implementing multi-factor authentication (MFA) for administrative access to add an additional layer of security, although MFA does not directly prevent CSRF, it can reduce the risk of session hijacking or misuse.