CVE-2025-10764 is a server-side request forgery (SSRF) vulnerability affecting SeriaWei's ZKEACMS content management system versions 4.0 through 4.3. The vulnerability resides in the Edit function within the PendingTaskController.cs file of the Event Action System component. Specifically, improper validation or sanitization of the 'Data' argument allows an attacker to manipulate server-side requests. SSRF vulnerabilities enable attackers to make the vulnerable server perform unauthorized requests to internal or external resources, potentially bypassing network restrictions. This can lead to information disclosure, internal network reconnaissance, or interaction with otherwise inaccessible services. The vulnerability can be exploited remotely without user interaction or authentication, increasing its risk profile. Although the vendor was notified early, no response or patch has been provided, and a public exploit is available, raising the likelihood of exploitation. The CVSS 4.0 base score is 5.3 (medium severity), reflecting the moderate impact on confidentiality, integrity, and availability, with low attack complexity and no required privileges or user interaction. The vulnerability does not affect the system's scope or cause complete system compromise directly but can be leveraged as a stepping stone for further attacks within the network or against internal services. No known exploits in the wild have been reported yet, but the public availability of exploit code increases the risk of imminent attacks.

For European organizations using ZKEACMS versions 4.0 to 4.3, this SSRF vulnerability poses a significant risk. Attackers can exploit the flaw to access internal network resources that are otherwise protected by firewalls or network segmentation, potentially exposing sensitive internal services, databases, or administrative interfaces. This can lead to unauthorized data access, lateral movement within the network, or disruption of internal services. Given that ZKEACMS is a CMS platform, exploitation could also facilitate further attacks such as injecting malicious content or pivoting to other systems. The lack of vendor response and patches increases exposure time, raising the urgency for organizations to implement mitigations. European organizations in sectors with high regulatory requirements for data protection (e.g., finance, healthcare, government) may face compliance risks if internal data is exposed. Additionally, the medium severity rating suggests that while the vulnerability is not immediately critical, it can be exploited with relative ease and should not be ignored.

Since no official patch is available, European organizations should implement immediate compensating controls. First, restrict network egress from the ZKEACMS server to only necessary external destinations using firewall rules or network segmentation to limit SSRF impact. Implement strict input validation and sanitization on the 'Data' parameter at the application or web server level, if possible, to block malicious payloads. Monitor logs for unusual outbound requests originating from the CMS server, which may indicate exploitation attempts. Employ web application firewalls (WAFs) with custom rules to detect and block SSRF patterns targeting the vulnerable endpoint. Consider isolating the CMS server in a dedicated network segment with limited access to internal resources. If feasible, upgrade to a newer version of ZKEACMS once a patch is released or consider alternative CMS platforms with active security support. Conduct regular vulnerability scanning and penetration testing focused on SSRF and related issues. Finally, maintain heightened awareness and incident response readiness for potential exploitation attempts.