EUVD-2026-18262CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3Tags
Description
Endian Firewall version 3.3.25 and prior allow authenticated users to delete arbitrary files via directory traversal in the remove ARCHIVE parameter to /cgi-bin/backup.cgi. The remove ARCHIVE parameter value is used to construct a file path without sanitization of directory traversal sequences, which is then passed to an unlink() call.
Analysis
Directory traversal in Endian Firewall 3.3.25 and earlier allows authenticated users to delete arbitrary files through the /cgi-bin/backup.cgi remove ARCHIVE parameter. Attackers with low-privileged network access can leverage unsanitized path construction passed to unlink() to achieve high-integrity impact by removing critical system files. …
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Remediation
Within 24 hours: Identify all Endian Firewall 3.3.25 and earlier deployments and document current version inventory. Within 7 days: restrict network access to the /cgi-bin/backup.cgi endpoint via firewall rules and disable or remove backup functionality if operationally feasible; implement access controls limiting backup operations to administrative accounts only. …
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External POC / Exploit Code
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