Is CVE-2026-52187 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-52187 being exploited in the wild.

How severe is CVE-2026-52187?

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-2026-52187?

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-2026-52187 attacked?

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

Am I affected by CVE-2026-52187?

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-2026-52187: UTT nv518G buffer overflow in GoAhead sub_483ba0

CVE-2026-52187 · 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 send a specially crafted web request that crashes the device's management interface or the device itself. This results in a denial of service, preventing legitimate users from accessing the network or managing the router.

Technologies: UTT NV518G. Vendors: UTT.

Quick answers

Is CVE-2026-52187 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-52187 being exploited in the wild.
How severe is CVE-2026-52187?: 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-2026-52187?: 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-2026-52187 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-52187?: 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 UTT nv518G router firmware (version nv518GV3v3.2.7-210919-161313) within the GoAhead web server component, specifically in the 'sub_483ba0' function. The vulnerability is caused by a lack of length validation on the 'indexIDNew' parameter passed via a POST request. A remote, unauthenticated attacker can exploit this by sending an oversized string in the 'indexIDNew' variable, leading to memory corruption and a denial of service (DoS) condition. A proof-of-concept (PoC) has been publicly disclosed.

Affected products

UTT nv518G nv518GV3v3.2.7-210919-161313

Timeline

2026-07-02: disclosed: Initial disclosure and CVE assignment

References

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