Is CVE-2026-76859 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-76859 being exploited in the wild.

How severe is CVE-2026-76859?

Medium severity, with a CVSS score of 6.5, published 15 September 2026.

Is there a fix for CVE-2026-76859?

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-2026-76859 attacked?

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

Am I affected by CVE-2026-76859?

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-2026-76859: Netcore NR255-V sensitive information disclosure in user_pass_show.cgi

CVE-2026-76859 · Severity: medium · CVSS 6.5 · Published 2026-09-15

The Netcore NR255-V is a wireless router used to provide internet connectivity in small offices and homes. A vulnerability in the router's web interface allows low-privilege attackers to extract stored Wi-Fi and admin credentials from the device without elevated access. An attacker who gains initial access to the router could retrieve these credentials to move laterally within the network or maintain persistent access.

Technologies: Netcore NR255-V. Vendors: Netcore.

Quick answers

Is CVE-2026-76859 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-76859 being exploited in the wild.
How severe is CVE-2026-76859?: Medium severity, with a CVSS score of 6.5, published 15 September 2026.
Which products and versions are affected?: Netcore NR255-V 1.5.130703.
Is there a fix for CVE-2026-76859?: 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-2026-76859 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-76859?: 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 sensitive information disclosure vulnerability (CWE-522) in the user_pass_show.cgi component of the Netcore NR255-V router firmware version 1.5.130703. The vulnerable code path involves ui_config_2.xml and misc.js, which insufficiently protect stored credentials. The attack requires network access to the router's web interface and low-privilege authentication; an authenticated attacker can request the user_pass_show.cgi endpoint to retrieve plaintext or weakly protected credentials. The vulnerability allows disclosure of router admin passwords and wireless network credentials. Patch status is unknown at this time.

Affected products

Netcore NR255-V 1.5.130703

Timeline

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

References

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