CVE-2026-6059 Cross-site scripting in Aterm 19000T12BE
Attackers can execute arbitrary scripts in users' browsers via the web management interface of NEC Aterm routers on adjacent networks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-6059?
CVE-2026-6059 is a medium-severity cross-site scripting vulnerability in NEC Platforms, Ltd. Aterm 19000T12BE, published on 25 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A cross-site scripting vulnerability exists in Aterm. Arbitrary scripts may be executed in the web browser of a user accessing the web management interface via adjacent network.
Weakness: CWE-79
Which versions are affected by CVE-2026-6059?
How do I fix CVE-2026-6059?
No fix has been published for CVE-2026-6059 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-2026-6059 being exploited?
There is no known exploitation of CVE-2026-6059 in the wild and no public exploit code.
Sources
Also known as GHSA-g9r3-rg2f-3r96.