EUVD-2025-210782
GHSA-3rxr-hwvp-fcq5
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-delivered CSRF requires no attacker privileges but mandates victim interaction; privilege escalation yields full system CIA impact.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
Cross-Site Request Forgery (CSRF) vulnerability in Lime Technology, Inc.'s Unraid OS version 6.12.14 and earlier allows remote attackers to escalate privileges via the Unraid authentication cookie's lax same-site policy.
AnalysisAI
Privilege escalation in Unraid OS 6.12.14 and earlier is enabled by a CSRF vulnerability rooted in the authentication cookie's lax SameSite policy, allowing a remote attacker to forge authenticated requests on behalf of a logged-in victim. When an authenticated Unraid user visits an attacker-controlled page, the browser's permissive cookie policy causes the session credential to accompany the cross-site request, potentially granting the attacker elevated access to the NAS management interface. No active exploitation is confirmed by CISA KEV; EPSS sits at 0.28% (20th percentile), though public security research at alittleinsecure.com documents the vulnerability in detail.
Technical ContextAI
Unraid OS is a Linux-based NAS and home-server operating system developed by Lime Technology, Inc., typically exposing a web-based management interface on the local network. The root cause (CWE-352) is a misconfigured SameSite cookie attribute: setting the authentication cookie to SameSite=Lax rather than SameSite=Strict allows the browser to attach the cookie to top-level cross-site navigations (e.g., GET requests triggered by clicking a link or loading a resource). If the Unraid web UI accepts state-changing operations that can be triggered via such requests, an attacker can craft a malicious page that silently issues privileged actions under the victim's session. The CPE data in NVD is listed as n/a, which is a data-quality gap; affected scope is defined by the vendor as versions 6.12.14 and earlier based on the CVE description.
RemediationAI
Users should upgrade Unraid OS to a version beyond 6.12.14 as released by Lime Technology; consult the vendor advisory at https://unraid.net/blog/cvd for the confirmed patched release version, as an exact fix version was not independently enumerable from the available reference data. As a compensating control pending upgrade, restrict access to the Unraid web management interface to trusted hosts only, using the built-in network access controls or a firewall rule to block external and untrusted LAN clients from reaching the management port - this eliminates the attacker's ability to deliver a forged request that the victim's browser can successfully route. Additionally, avoid browsing untrusted websites from a machine that has an active authenticated Unraid session; logging out of the Unraid UI when not in use removes the session cookie and neutralizes the CSRF vector.
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Same weakness CWE-352 – Cross-Site Request Forgery (CSRF)
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External POC / Exploit Code
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