CVE-2025-2776 is a critical security vulnerability identified in SysAid On-Prem versions up to and including 23.3.40. The vulnerability is classified as CWE-611, which refers to Improper Restriction of XML External Entity (XXE) Reference. This vulnerability arises from inadequate validation and sanitization of XML input, specifically in the Server URL processing functionality of the SysAid On-Prem product. An attacker can exploit this flaw without any authentication or user interaction, by sending a specially crafted XML payload that triggers the processing of external entities. This can lead to the disclosure of sensitive files on the server and potentially enable an attacker to take over an administrator account. The CVSS v3.1 base score is 9.3, indicating a critical severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L) shows that the attack can be performed remotely over the network with low attack complexity, requires no privileges or user interaction, and results in a complete breach of confidentiality with partial impact on availability. The scope is changed, meaning the vulnerability affects components beyond the initially vulnerable component. Although no known exploits are currently reported in the wild, the nature of the vulnerability and its impact make it a high-risk issue that demands immediate attention. The lack of available patches at the time of reporting further increases the urgency for mitigation.

For European organizations, the exploitation of CVE-2025-2776 could have severe consequences. SysAid On-Prem is widely used for IT service management and asset management, often holding sensitive organizational data and administrative controls. An attacker gaining administrator-level access can manipulate service management workflows, access confidential information, disrupt IT operations, and potentially move laterally within the network. The unauthorized file read capability could expose sensitive configuration files, credentials, or other critical data, leading to further compromise or data breaches. Given the criticality of IT service management in maintaining operational continuity, exploitation could result in significant downtime, regulatory non-compliance (especially under GDPR), reputational damage, and financial losses. The fact that the vulnerability requires no authentication and can be exploited remotely increases the risk of automated attacks targeting vulnerable systems across Europe.

Immediate mitigation steps should include restricting network exposure of the SysAid On-Prem server, especially limiting access to trusted internal networks or VPNs. Organizations should implement strict input validation and XML parsing restrictions where possible, such as disabling external entity processing in XML parsers used by SysAid if configurable. Monitoring and logging of unusual XML requests or server URL processing activities should be enhanced to detect potential exploitation attempts. Until an official patch is released, consider deploying Web Application Firewalls (WAFs) with custom rules to block malicious XML payloads targeting XXE patterns. Conduct thorough audits of existing SysAid On-Prem deployments to identify affected versions and prioritize upgrades once patches become available. Additionally, enforce the principle of least privilege on SysAid administrator accounts and network segmentation to limit the impact of a potential compromise.