CVE-2025-10993 is a medium-severity code injection vulnerability affecting MuYuCMS versions 2.0 through 2.7. The flaw resides in the /admin.php file, specifically within the Template Management component. An attacker can remotely exploit this vulnerability without user interaction or authentication, as indicated by the CVSS vector (AV:N/AC:L/AT:N/UI:N/PR:H). The vulnerability allows injection of arbitrary code, potentially enabling an attacker to execute malicious commands or scripts on the server hosting MuYuCMS. Although the CVSS score is moderate at 5.1, the presence of code injection in an administrative component is concerning because it can lead to unauthorized code execution, data manipulation, or further compromise of the system. The vulnerability does not require user interaction but does require high privileges (PR:H), suggesting that the attacker must have some level of authenticated access, possibly through compromised credentials or other means. The impact on confidentiality, integrity, and availability is low to limited (VC:L/VI:L/VA:L), indicating that while exploitation is possible, the scope of damage may be constrained by existing access controls or sandboxing. No known exploits in the wild have been reported yet, and no patches or mitigation links are currently available, which increases the risk for organizations that have not implemented compensating controls. The vulnerability is specific to the Template Management functionality, which is often critical for website appearance and behavior, so exploitation could also lead to defacement or insertion of malicious content affecting end users.

For European organizations using MuYuCMS, this vulnerability poses a moderate risk. Organizations relying on MuYuCMS for content management, particularly those with administrative interfaces exposed to the internet, could face unauthorized code execution leading to data breaches, website defacement, or service disruption. Given the administrative nature of the affected component, attackers with access could manipulate templates to inject malicious scripts, potentially compromising user data or spreading malware. The impact is heightened for organizations in sectors with strict data protection regulations such as GDPR, where unauthorized access or data leakage could result in significant legal and financial penalties. Additionally, the lack of patches means that organizations must rely on detection and mitigation strategies to reduce exposure. The vulnerability could also be leveraged as a foothold for lateral movement within internal networks, increasing the risk of broader compromise. However, since exploitation requires high privileges, the initial barrier limits the threat to attackers who have already bypassed some security controls, emphasizing the importance of strong authentication and access management.

1. Restrict access to the /admin.php interface to trusted IP addresses or VPN users to reduce exposure to remote attackers. 2. Enforce strong authentication mechanisms, including multi-factor authentication, to prevent unauthorized access with elevated privileges. 3. Monitor administrative logs for unusual activity or unauthorized template modifications that could indicate exploitation attempts. 4. Implement web application firewalls (WAF) with custom rules to detect and block suspicious payloads targeting the Template Management component. 5. Conduct regular security audits and code reviews of MuYuCMS installations to identify and remediate insecure configurations or customizations. 6. Isolate the CMS environment from critical internal systems to limit lateral movement in case of compromise. 7. Stay updated with vendor announcements for patches or official fixes and apply them promptly once available. 8. Consider deploying runtime application self-protection (RASP) tools to detect and block code injection attempts in real time.