CVE-2026-92257 Netcore NR255-V 1.5.130703 Stored Cross-Site Scripting in L7 Content Management via eval() Sinks
Attackers can inject persistent scripts into Netcore NR255-V routers via L7 content management, leading to code execution in other users' browsers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-92257?
CVE-2026-92257 is a medium-severity cross-site scripting vulnerability in Netcore NR255-V, published on 15 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Netcore NR255-V version 1.5.130703 contains a stored cross-site scripting vulnerability in L7 content management pages that use eval() sinks, affecting the call board text and policy group handling components. Attackers can inject persistent script payloads through these pages to have malicious code executed in the context of other users viewing the affected content.
Weakness: CWE-79
Which versions are affected by CVE-2026-92257?
How do I fix CVE-2026-92257?
No fix has been published for CVE-2026-92257 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-92257 being exploited?
There is no known exploitation of CVE-2026-92257 in the wild and no public exploit code.
Sources
Also known as GHSA-g4f4-vmp7-9gv7.