CVE-2025-43877 Cross-site scripting in WRC-1167GHBK2-S
Stored XSS in the WebGUI allows arbitrary script execution in the browser of users accessing the router interface.
- 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-2025-43877?
CVE-2025-43877 is a medium-severity cross-site scripting vulnerability in ELECOM CO.,LTD. WRC-1167GHBK2-S, published on 24 Jun 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
WRC-1167GHBK2-S contains a stored cross-site scripting vulnerability in WebGUI. If exploited, an arbitrary script may be executed on the web browser of the user who accessed WebGUI of the product.
Weakness: CWE-79
Which versions are affected by CVE-2025-43877?
How do I fix CVE-2025-43877?
No fix has been published for CVE-2025-43877 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-2025-43877 being exploited?
There is no known exploitation of CVE-2025-43877 in the wild and no public exploit code.
Sources
Also known as GHSA-6cpf-h5pp-m758.