CVE-2026-9218 Insufficient input validation vulnerability in Certain NETGEAR routers allows unauthorized access
An attacker with admin credentials on the local network can execute unauthorized commands on NETGEAR routers via the NTP settings.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9218?
CVE-2026-9218 is a medium-severity command injection vulnerability in NETGEAR CBR40, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Insufficient input validation vulnerability in time server (NTP) setting of the listed NETGEAR models allows an attacker who is connected to the router’s local network and has the router’s administrator credentials to run unauthorized commands on the router. This vulnerability could impact the integrity of the affected router. There is no impact on confidentiality or availability of the affected router.
Weakness: CWE-20
Which versions are affected by CVE-2026-9218?
How do I fix CVE-2026-9218?
No fix has been published for CVE-2026-9218 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-9218 being exploited?
There is no known exploitation of CVE-2026-9218 in the wild and no public exploit code.
Sources
Also known as GHSA-gxq5-cgpc-wcvr.