Is CVE-2026-92257 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-92257 being exploited in the wild.

How severe is CVE-2026-92257?

Medium severity, with a CVSS score of 5.4, published 15 September 2026.

Is there a fix for CVE-2026-92257?

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-2026-92257 attacked?

It is attacked over the network.

Am I affected by CVE-2026-92257?

Check whether you run Netcore NR255-V 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-2026-92257: Netcore NR255-V stored cross-site scripting in L7 content management

CVE-2026-92257 · Severity: medium · CVSS 5.4 · Published 2026-09-15

Netcore NR255-V is a network router used to manage and control layer-7 content policies and call board configurations. A stored cross-site scripting vulnerability allows authenticated attackers to inject malicious scripts into management pages that execute when other administrators view the compromised content, potentially leading to credential theft, unauthorized configuration changes, or lateral movement within the network.

Technologies: Netcore NR255-V. Vendors: Netcore.

Quick answers

Is CVE-2026-92257 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-92257 being exploited in the wild.
How severe is CVE-2026-92257?: Medium severity, with a CVSS score of 5.4, published 15 September 2026.
Which products and versions are affected?: Netcore NR255-V 1.5.130703.
Is there a fix for CVE-2026-92257?: 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-2026-92257 attacked?: It is attacked over the network.
Am I affected by CVE-2026-92257?: Check whether you run Netcore NR255-V 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

This is a stored cross-site scripting (CWE-79) vulnerability in the L7 content management pages of Netcore NR255-V v1.5.130703, specifically affecting the call board text and policy group handling components. The vulnerability exists because user input is passed directly to eval() sinks without proper sanitization or escaping. The attack requires authentication to the management interface and user interaction (viewing the affected page), but once injected, the malicious script persists and executes in the context of any administrator viewing that content. An attacker with management access can achieve session hijacking, credential disclosure, or unauthorized configuration changes. No patch status is currently documented.

Affected products

Netcore NR255-V 1.5.130703

Timeline

2026-09-04: disclosed
2026-09-15: advisory

References

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