CVE-2025-11284 is a medium-severity vulnerability affecting Zytec Dalian Zhuoyun Technology's Central Authentication Service version 3. The vulnerability arises from the use of a hard-coded password within an unknown functionality of the /index.php/auth/Ops/git component, specifically related to the HTTP Header Handler. An attacker can exploit this flaw remotely by manipulating the Authorization argument in HTTP requests. Because the password is hard-coded, it bypasses normal authentication mechanisms, allowing unauthorized access without requiring any prior credentials or user interaction. The vulnerability does not require privileges or user interaction to exploit, making it accessible to remote attackers over the network. The CVSS 4.0 base score is 6.9, reflecting a medium severity level due to the potential for partial confidentiality, integrity, and availability impacts, but with limited scope and no privilege or user interaction requirements. The vendor was contacted but did not respond, and no patches or mitigations have been published yet. Although no known exploits are currently observed in the wild, the public disclosure of the exploit code increases the risk of exploitation. The vulnerability could allow attackers to gain unauthorized access to the authentication service, potentially leading to unauthorized access to protected resources or further lateral movement within affected environments.

For European organizations using Zytec Dalian Zhuoyun Technology Central Authentication Service version 3, this vulnerability poses a significant risk to the security of their authentication infrastructure. Exploitation could lead to unauthorized access to critical systems and sensitive data, undermining confidentiality and integrity. The authentication service is a central point for validating user credentials; compromise here could enable attackers to bypass access controls, impersonate users, or escalate privileges. This could result in data breaches, disruption of services, and potential regulatory non-compliance under GDPR due to unauthorized data access. The remote and unauthenticated nature of the exploit increases the likelihood of attacks, especially in environments exposed to the internet or insufficiently segmented networks. The lack of vendor response and absence of patches further exacerbate the risk, requiring organizations to implement compensating controls promptly. Additionally, the vulnerability could be leveraged as a foothold for more extensive attacks, including lateral movement and persistence within enterprise networks.

Given the absence of official patches or vendor guidance, European organizations should take immediate and specific steps to mitigate this vulnerability: 1) Restrict network access to the affected Central Authentication Service instance by implementing strict firewall rules or network segmentation to limit exposure only to trusted internal systems. 2) Monitor and analyze logs for suspicious Authorization header manipulations or unexpected authentication attempts targeting /index.php/auth/Ops/git endpoints. 3) Employ Web Application Firewalls (WAFs) with custom rules to detect and block requests containing suspicious Authorization headers or patterns indicative of exploitation attempts. 4) If feasible, disable or isolate the vulnerable functionality or component until a patch is available. 5) Conduct thorough audits of authentication logs and related systems for signs of compromise. 6) Prepare incident response plans specific to this vulnerability, including rapid containment and forensic analysis procedures. 7) Engage with Zytec Dalian Zhuoyun Technology for updates and consider alternative authentication solutions if remediation is delayed. 8) Ensure all other systems and services are up to date to reduce the attack surface and prevent lateral movement.