CVE-2026-76868: Netcore NR255-V null pointer dereference in route_policy_add.cgi

CVE-2026-76868 · Severity: medium · CVSS 4.9 · Published 2026-09-15

The Netcore NR255-V is a network router used to manage traffic and routing policies in corporate and home networks. A null pointer dereference vulnerability in its web-based route policy configuration interface allows remote attackers with administrative access to crash the router by sending specially crafted requests, causing a denial of service and network outage.

Technologies: Netcore NR255-V. Vendors: Netcore.

Quick answers

Is CVE-2026-76868 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-76868 being exploited in the wild.
How severe is CVE-2026-76868?
Medium severity, with a CVSS score of 4.9, published 15 September 2026.
Which products and versions are affected?
Netcore NR255-V 1.5.130703.
Is there a fix for CVE-2026-76868?
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-2026-76868 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-76868?
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

A null pointer dereference vulnerability exists in the route_policy_add.cgi component of Netcore NR255-V version 1.5.130703. The vulnerability is triggered when an attacker sends a request to the CGI script without the required exit_port parameter, causing the application to attempt to dereference a null pointer. The attack requires administrative privileges to access the affected interface and network connectivity to the device's web management interface. Exploitation results in a denial of service condition, crashing the affected service or device. No patch information is currently available.

Affected products

  • Netcore NR255-V 1.5.130703

Timeline

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

References

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