CVE-2025-2855 in eladmin
Summary
by MITRE • 03/27/2025
A vulnerability, which was classified as problematic, has been found in elunez eladmin up to 2.7. Affected by this issue is the function checkFile of the file /api/deploy/upload. The manipulation of the argument servers leads to deserialization. The attack may be launched remotely.
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Analysis
by VulDB Data Team • 07/18/2026
This vulnerability exists within elunez eladmin version 2.7 and earlier, representing a critical security flaw that enables remote code execution through insecure deserialization. The issue is located in the checkFile function within the /api/deploy/upload endpoint, where the servers parameter is improperly handled during the deserialization process. This allows attackers to craft malicious payloads that can be executed on the target system when the application processes these inputs. The vulnerability stems from the application's failure to properly validate and sanitize user-supplied data before deserializing it, creating an exploitation vector that can be leveraged remotely without requiring authentication.
The technical implementation of this flaw follows a classic deserialization vulnerability pattern where untrusted input is directly passed to a deserialization function without proper sanitization or validation. When the servers parameter contains malicious serialized data, the application's deserialization mechanism processes this input and executes arbitrary code as part of the deserialization process. This type of vulnerability is particularly dangerous because it can be exploited from remote locations, allowing attackers to gain unauthorized access to the system and potentially escalate privileges. The attack surface is broad since the vulnerable endpoint is exposed through the web interface and does not require specific authentication credentials to exploit.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with complete control over the affected system. Successful exploitation can lead to data breaches, system compromise, and potential lateral movement within network environments. Attackers can leverage this vulnerability to install backdoors, exfiltrate sensitive information, or use the compromised system as a pivot point for attacking other systems within the network. The remote nature of the attack means that adversaries can exploit this flaw from anywhere on the internet, making it particularly attractive for threat actors seeking to compromise multiple targets without physical access to the systems.
Organizations should implement immediate mitigations including patching to the latest version of elunez eladmin where this vulnerability has been resolved. Network segmentation and firewall rules should be configured to restrict access to the vulnerable API endpoints until patches are applied. Input validation and sanitization measures should be enhanced to prevent malicious serialized data from reaching the deserialization functions. Additionally, implementing application whitelisting and runtime protection mechanisms can help detect and prevent exploitation attempts. This vulnerability aligns with CWE-502 which specifically addresses deserialization of untrusted data, and maps to ATT&CK technique T1203 for exploiting software vulnerabilities and T1059 for command and scripting interpreter execution. Regular security assessments and penetration testing should be conducted to identify similar weaknesses in other applications within the organization's attack surface.