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CriticalCISA KEVExploited in the wildPublic exploit

Authentication Bypass and RCE in Gladinet Triofox

IdentifiersCVE-2025-12480CWE-284· Improper Access Control

CVE-2025-12480 is an improper access control vulnerability in Gladinet Triofox affecting versions prior to 16.7.10368.56560. After initial deployment, Triofox is intended to block access to setup and configuration pages, but the vulnerable access-control logic can be bypassed by manipulating the HTTP Host header, specifically by supplying a value of "localhost". Reporting identifies the vulnerable logic in CanRunCriticalPage() within GladPageUILib.dll, which incorrectly trusts the Host header as an indicator of local origin. This allows an unauthenticated remote attacker to reach sensitive setup pages such as AdminAccount.aspx and AdminDatabase.aspx even after setup is complete, rerun the initial setup workflow, and create a new native administrative account. In observed exploitation, attackers then abused Triofox’s built-in anti-virus feature by configuring the anti-virus engine path to an attacker-controlled script or binary. When a file was uploaded to a published share, Triofox executed the configured program with SYSTEM privileges, enabling arbitrary code execution on the host. Active exploitation in the wild by UNC6485 was reported against Triofox 16.4.10317.56372, and shared functionality may also affect Gladinet CentreStack.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation permits unauthenticated compromise of exposed Triofox servers. An attacker can bypass authentication, access privileged configuration functions, create rogue administrative accounts, and then achieve SYSTEM-level code execution by abusing the anti-virus execution path. This can lead to full host compromise, deployment of remote management tools, persistence, credential and account manipulation, lateral movement, data theft, and use of the server as an internal pivot point. Observed post-exploitation activity included deployment of Zoho UEMS, Zoho Assist, and AnyDesk, as well as SSH reverse tunneling for external RDP access.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, restrict network access to Triofox management and setup interfaces using firewall or reverse-proxy controls, limiting access to trusted administrative sources only. Monitor for external requests with a Host header of "localhost" or other anomalous Host values. Audit for unexpected access to setup pages, creation of new admin accounts, and changes to anti-virus engine settings. Monitor for suspicious outbound SSH traffic, reverse tunnels, unexpected binaries in temporary or system directories, and installation of remote administration tools such as Zoho Assist or AnyDesk. Inventory all Triofox and related CentreStack instances and verify exposure.

Remediation

Patch, then assume compromise.

Upgrade Gladinet Triofox to version 16.7.10368.56560 or later; some reporting also recommends upgrading to the latest available release, including 16.10.10408.56683, to ensure all related fixes are applied. Validate that the vulnerable setup/configuration pages are no longer reachable after installation is complete. Review all Triofox administrative accounts for unauthorized additions, especially newly created native admin accounts. Inspect and correct the Anti-virus Engine configuration to ensure it does not reference unauthorized scripts or binaries. If compromise is suspected, collect logs and perform forensic review for indicators such as suspicious Host header access, unexpected file uploads, remote access tool installation, and outbound SSH tunneling activity.
PUBLIC EXPLOITS

Exploits

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VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

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VendorProductType
GladinetTriofoxapplication

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Exposure mapping

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Threat actor evidence4

Every observed campaign linking this CVE to a named adversary.

Associated malware3

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Detection signatures3

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Vendor-by-vendor mapping

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Social activity76

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