This vulnerability allows authenticated users of Endian Firewall version 3.3.25 and prior to delete arbitrary files through a directory traversal attack. Specifically, the flaw resides in the remove ARCHIVE parameter used in the /cgi-bin/backup.cgi script, where unvalidated input can lead to unauthorized file deletions. With a CVSS score of 7.1, this vulnerability is classified as high severity, indicating significant risk to the integrity of systems using affected versions.
Risk to organizations includes potential data loss and service disruption, as attackers may exploit this vulnerability to remove critical files from the system. The exploitation status indicates that there are currently no known exploits or proof-of-concept code available, but given the nature of the vulnerability, organizations should remain vigilant.
Organizations should prioritize patching immediately. It is crucial to upgrade to a version that addresses this vulnerability to prevent potential exploitation.
The publication date of this vulnerability was April 2, 2026, and it was last modified on April 7, 2026. The urgency for remediation is underscored by its high severity rating and the potential impact on organizational operations.
For further details and updates on this vulnerability, refer to the official documentation and advisories.
Vulnerability Details
The vulnerability is characterized as a directory traversal issue, specifically identified by CWE-22. It affects Endian Firewall versions up to 3.3.25, allowing unauthorized file deletion through manipulated parameters. The CVSS score of 7.1 indicates a high risk, with integrity impact rated as high and availability impact as low. The vulnerability is publicly disclosed but does not have any known active exploits.
Technical Analysis
The root cause of this vulnerability lies in inadequate input validation for the remove ARCHIVE parameter. An attacker can exploit this by crafting a malicious request that includes directory traversal sequences, ultimately allowing access to unauthorized file paths. The attack vector is network-based, requiring low complexity and minimal privileges, making it accessible to a wide range of attackers.
No user interaction is required for this vulnerability to be exploited, which enhances its risk profile. The impacts include a high integrity loss as files can be deleted, while confidentiality and availability are minimally affected. Organizations utilizing the Endian Firewall should assess their exposure and implement necessary security measures to mitigate this risk.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is significant. Given that authenticated users can exploit the flaw, the blast radius may vary significantly based on the organization's user management and access controls. Organizations must recognize that any unauthorized file deletion can lead to loss of operational integrity and data, affecting overall business continuity.
The urgency for addressing this vulnerability is high, especially in environments where sensitive data is managed. Organizations should incorporate this vulnerability into their risk assessment frameworks and prioritize its remediation in their patch cycles.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected products include Endian Firewall Community up to version 3.3.25. Organizations utilizing this software should ensure they are upgraded to the latest version to mitigate the risks associated with this vulnerability. If version information is missing, it is recommended to state that all versions prior to vendor patch are affected.
Mitigation & Remediation
Organizations should prioritize patching this vulnerability by upgrading to a version that remediates this issue. If a patch is not available, consider implementing workarounds such as restricting access to affected endpoints and utilizing network controls to block unauthorized access. For effective risk management, organizations may also consider conducting a thorough penetration testing program to identify similar weaknesses in their systems.
Detection Guidance
Monitoring logs for any unauthorized file deletions or suspicious access attempts should be a priority. Look for behavioral anomalies such as unusual patterns of file access or modifications in critical directories. Implementing network signatures to detect potential exploitation attempts can further enhance security posture.
AppSecure Threat Intelligence Insight
This vulnerability represents a significant concern for organizations using Endian Firewall, highlighting the importance of robust input validation mechanisms. It underscores the necessity for security teams to remain vigilant and to implement stringent testing protocols. The lessons learned from this vulnerability can inform future development and testing practices to better secure applications against similar threats.
For further insights on vulnerability management, organizations can refer to the following resources: vulnerability management program design, penetration testing methodology, and API penetration testing guide to enhance overall security strategy.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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