EUVD-2026-12166Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
Unraid Update Request Path Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Unraid. Authentication is required to exploit this vulnerability.
The specific flaw exists within the update.php file. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-28951.
AnalysisAI
Critical path traversal vulnerability in Unraid's update.php file that allows authenticated remote attackers to execute arbitrary code as root. The vulnerability affects all versions of Unraid (per CPE data) and was discovered by Zero Day Initiative (ZDI-CAN-28951). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Valid Unraid user credentials required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This vulnerability presents a high real-world risk based on multiple factors: The CVSS vector (AV:N/AC:L/PR:L/UI:N) indicates it's remotely exploitable with low complexity and requires only low-level authentication. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with valid Unraid credentials (obtained through phishing, credential stuffing, or insider access) connects to the Unraid web interface remotely. They craft a malicious request to update.php containing directory traversal sequences (e.g., '../../../') in the path parameter. … |
| Remediation | No specific patch information is available in the provided data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify and inventory all Unraid instances in your environment and restrict network access to update.php to essential administrators only. …
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