CVE-2026-0403 Insufficient input validation in NETGEAR Orbi routers
LAN attackers can execute OS commands on NETGEAR Orbi routers due to insufficient input validation, requiring vendor patches.
- 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-2026-0403?
CVE-2026-0403 is a low-severity command injection vulnerability in Netgear Rbr750 Firmware, published on 13 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An insufficient input validation vulnerability in NETGEAR Orbi routers allows attackers connected to the router's LAN to execute OS command injections.
Weakness: CWE-20
Which versions are affected by CVE-2026-0403?
It affects 10 products.
Products include Netgear Rbe970 Firmware, Netgear Rbe971 Firmware, Netgear Rbr750 Firmware, Netgear Rbr850 Firmware, Netgear Rbr860 Firmware, Netgear Rbre960 Firmware and 4 more.
How do I fix CVE-2026-0403?
No fix has been published for CVE-2026-0403 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-2026-0403 being exploited?
There is no known exploitation of CVE-2026-0403 in the wild and no public exploit code.
Other vulnerabilities in Netgear Rbr750 Firmware
- CVE-2026-3088 Unauthenticated users can disrupt router operation
- CVE-2026-0414 Insufficient Input Validation Allows Unauthorized Modification of Router Software in certain NETGEAR Routers
- CVE-2026-0415 Insufficient input validation vulnerability in certain Orbi routers
- CVE-2026-0411 A Sensitive Information Disclosure Vulnerability in NETGEAR Orbi Satellites
Sources
Also known as GHSA-52xc-q9g5-mc6m.