Is CVE-2026-52188 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-52188 being exploited in the wild.

How severe is CVE-2026-52188?

Informational severity, with a CVSS score of 7.5, published 2 July 2026.

Which products and versions are affected?

UTT NV518G nv518GV3v3.2.7-210919-161313.

Is there a fix for CVE-2026-52188?

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-2026-52188 attacked?

It is attacked over the network, in an operating system.

Am I affected by CVE-2026-52188?

Check whether you run UTT NV518G 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-2026-52188: UTT nv518G buffer overflow in gohead component

CVE-2026-52188 · Severity: info · CVSS 7.5 · Published 2026-07-02

A buffer overflow vulnerability exists in the UTT nv518G enterprise router. This flaw allows a remote attacker to crash the device's web management service or the entire router by sending a specially crafted web request. This can lead to a total loss of network connectivity and management capabilities for the affected business.

Technologies: UTT NV518G. Vendors: UTT.

Quick answers

Is CVE-2026-52188 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-52188 being exploited in the wild.
How severe is CVE-2026-52188?: Informational severity, with a CVSS score of 7.5, published 2 July 2026.
Which products and versions are affected?: UTT NV518G nv518GV3v3.2.7-210919-161313.
Is there a fix for CVE-2026-52188?: 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-2026-52188 attacked?: It is attacked over the network, in an operating system.
Am I affected by CVE-2026-52188?: Check whether you run UTT NV518G 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 stack-based buffer overflow exists in the 'gohead' web server component of UTT nv518G routers, specifically within the 'sub_497498' function. The vulnerability is caused by a lack of length validation on the 'GroupName' parameter provided in a POST request. An attacker can exploit this by sending an overly long string in the GroupName field, leading to memory corruption. Successful exploitation allows a remote, unauthenticated attacker to cause a denial of service (DoS) by crashing the service. Proof-of-concept code demonstrates the crash using a long string of characters in a standard HTTP POST request to the affected endpoint.

Affected products

UTT nv518G firmware nv518GV3v3.2.7-210919-161313

Timeline

2026-07-02: advisory: CVE-2026-52188 published by NVD

References

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