CVE-2026-15757 Insufficient input validation vulnerability in NETGEAR DGND3700v1 modem router
An attacker on the local WiFi network can send unauthorized commands to the NETGEAR DGND3700v1 router due to insufficient input validation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15757?
CVE-2026-15757 is a medium-severity missing authorization vulnerability in NETGEAR DGND3700v1, published on 14 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A security flaw was discovered in the NETGEAR DGND3700v1 that could allow someone on the same local WiFi network to send unauthorized commands to the device.
This issue was identified through testing in a controlled research environment using a simulated version of the router's software and has not been confirmed on physical production devices.
Weakness: CWE-20
Which versions are affected by CVE-2026-15757?
How do I fix CVE-2026-15757?
No fix has been published for CVE-2026-15757 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-15757 being exploited?
There is no known exploitation of CVE-2026-15757 in the wild and no public exploit code.
Sources
Also known as GHSA-xc2c-56pv-q355.