CVE-2026-16876 Auth bypass in UNIVERGE IX-R/IX-V
Attackers can bypass authentication in the WebGUI to execute arbitrary CLI commands on NEC UNIVERGE IX-R/IX-V devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16876?
CVE-2026-16876 is a critical authentication bypass vulnerability in NEC Corporation UNIVERGE IX-R/IX-V, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An authentication bypass vulnerability exists in the WebGUI of Series UNIVERGE IX-R/IX-V. A user could bypass authentication and execute arbitrary CLI commands by tampering with WebGUI messages and sending them to the device via internet.
Weakness: CWE-306
Which versions are affected by CVE-2026-16876?
How do I fix CVE-2026-16876?
No fix has been published for CVE-2026-16876 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-16876 being exploited?
There is no known exploitation of CVE-2026-16876 in the wild and no public exploit code.
Sources
Also known as GHSA-8rh4-5q7c-x6qf.