CVE-2025-23918 is a critical vulnerability classified as an Unrestricted Upload of File with Dangerous Type in the Enrico Sandoli Smallerik File Browser. This vulnerability allows attackers to upload a web shell to a web server, enabling them to execute arbitrary commands remotely. The severity level is critical, with a CVSS score of 9.9, indicating the potential for significant damage if exploited.
The risk to organizations includes unauthorized access and control over affected systems, which could lead to data breaches and service disruption. As this vulnerability has been publicly disclosed, the urgency for defenders to act is high, requiring immediate patching and remediation efforts.
Currently, there are no known exploits or proofs of concept publicly available for this vulnerability. However, given its nature and the critical severity rating, organizations must take proactive measures to secure their systems.
Organizations should prioritize patching immediately to mitigate the risks associated with CVE-2025-23918 and ensure the integrity and security of their web applications.
Vulnerability Details
This vulnerability allows unrestricted file upload in the Smallerik File Browser, specifically affecting versions from n/a to 1.1. The CVSS score of 9.9 indicates a critical severity level, attributed to factors such as low attack complexity and high impact on confidentiality, integrity, and availability. The attack vector is network-based, requiring low privileges, and does not necessitate user interaction.
The vulnerability aligns with CWE-434, which classifies it as an arbitrary file upload issue. This classification highlights the significant security risk posed by allowing users to upload files without proper validation.
Technical Analysis
The root cause of CVE-2025-23918 lies in inadequate file type validation, allowing attackers to upload potentially dangerous files such as web shells. The attack vector is network-based, where attackers can exploit the vulnerability remotely. The attack complexity is low, meaning it can be executed easily with minimal effort. The privileges required to exploit this vulnerability are low, while user interaction is not necessary.
Successful exploitation of this vulnerability could lead to severe impacts on confidentiality, integrity, and availability, making it imperative for organizations to address it urgently.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2025-23918 is significant. Organizations utilizing the affected Smallerik File Browser are at high risk of unauthorized access and potential data breaches. The blast radius for this vulnerability is considerable, as successful exploitation could compromise entire web applications and the sensitive data they handle.
Given the CVSS score of 9.9 and the potential for severe impact, organizations should address this vulnerability in their priority patch cycle. The urgency is underscored by the fact that this vulnerability has been publicly disclosed, making it a target for potential attackers.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected, specifically Smallerik File Browser versions n/a through 1.1.
Mitigation & Remediation
To mitigate the risks associated with CVE-2025-23918, organizations should upgrade the Smallerik File Browser to the latest version. In cases where an immediate upgrade is not feasible, implementing strict file type validation and upload controls is essential. Organizations may also consider utilizing penetration testing to assess their applications for similar vulnerabilities.
Detection Guidance
Organizations should monitor logs for any unusual file upload activities, especially attempts to upload executable files. Behavioral anomalies in file handling or unauthorized access attempts should also be investigated promptly.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-23918 lies in its potential to highlight vulnerabilities associated with file upload mechanisms across various web applications. This vulnerability represents a broader trend in application security where inadequate input validation can lead to severe security risks.
Security teams should leverage this incident to strengthen their application security protocols and implement robust file handling practices. Lessons learned from this vulnerability can inform future development and security assessment strategies.
For further insights into enhancing application security, organizations may refer to resources on vulnerability management programs and the importance of penetration testing methodologies in identifying such weaknesses.
Furthermore, organizations should stay informed on emerging threats and trends in application security by reviewing relevant publications that focus on cloud security and web application security testing practices.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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