Is CVE-2026-8359 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-8359 being exploited in the wild.

How severe is CVE-2026-8359?

High severity, with a CVSS score of 7.5, published 27 May 2026.

Which products and versions are affected?

Gladinet Triofox Server Agent 17.1.10488.57063.

Is there a fix for CVE-2026-8359?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-8359 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-8359?

Check whether you run Gladinet Triofox Server Agent at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-8359: Gladinet Triofox Server Agent NULL pointer dereference in GladServerAgentService

CVE-2026-8359 · Severity: high · CVSS 7.5 · Published 2026-05-27

Gladinet Triofox Server Agent is a software component used to facilitate secure remote access and file synchronization. A vulnerability in how the server handles specific web requests can cause the application to crash. An unauthenticated attacker can exploit this by sending a specially crafted web request, leading to a denial-of-service condition that disrupts remote file access for users.

Technologies: Gladinet Triofox Server Agent. Vendors: Gladinet.

Quick answers

Is CVE-2026-8359 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-8359 being exploited in the wild.
How severe is CVE-2026-8359?: High severity, with a CVSS score of 7.5, published 27 May 2026.
Which products and versions are affected?: Gladinet Triofox Server Agent 17.1.10488.57063.
Is there a fix for CVE-2026-8359?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-8359 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-8359?: Check whether you run Gladinet Triofox Server Agent at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A NULL pointer dereference exists in the Gladinet Triofox Cloud Server Agent Access Service (GladServerAgentService.exe). When the service receives an HTTP request with a URL path starting with /status or /sysinfo, it attempts to load WOSHttpStatusModule.dll and call the exported function WOSBin_LoadHttpModule. Because this DLL is missing from the standard installation, the function pointer is initialized to NULL. When the service attempts to execute the function at address 0, it triggers an access violation and crashes the process. This can be triggered by a remote, unauthenticated attacker via a simple GET request to the affected endpoints on TCP port 7878.

Affected products

Gladinet Triofox Server Agent 17.1.10488.57063

Timeline

2026-05-27: advisory: Tenable published research advisory TRA-2026-45
2026-05-27: disclosed: CVE-2026-8359 published to the NVD dataset

References

https://www.tenable.com/security/research/TRA-2026-45

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