What is the CVSS score of CVE-2026-0403?

CVE-2026-0403 has a CVSS 3.1 base score of 8.0 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Rbs850 Firmware are affected by CVE-2026-0403?

Organizations using An insufficient input validation vulnerability in NETGEAR Orbi routers face notable risk from CVE-2026-0403, a input validation vulnerability rated CVSS 8.0.. A patch is available.

How to fix or mitigate CVE-2026-0403?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Vendor patch is available.

Rbs850 Firmware CVE-2026-0403

HIGH

Improper Input Validation (CWE-20)

2026-01-13 a2826606-91e7-4eb6-899e-8484bd4575d5

Netgear Command Injection Rbs850 Firmware Rbe970 Firmware Rbs750 Firmware Rbr750 Firmware Rbse960 Firmware Rbe971 Firmware Rbs860 Firmware Rbr850 Firmware Rbr860 Firmware Rbre960 Firmware

8.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.0 HIGH

AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

Patch released

Feb 20, 2026 - 19:38 nvd

Patch available

CVE Published

Jan 13, 2026 - 16:16 nvd

HIGH 8.0

DescriptionCVE.org

An insufficient input validation vulnerability in NETGEAR Orbi routers allows attackers connected to the router's LAN to execute OS command injections.

AnalysisAI

NETGEAR Orbi routers (RBS850, RBE970, RBS750) are vulnerable to OS command injection through inadequate input validation, enabling attackers on the local network to execute arbitrary commands with elevated privileges. The vulnerability requires LAN access and low privileges but provides complete system compromise through high-impact code execution capabilities. A patch is available for affected firmware versions.

Technical ContextAI

Classified as CWE-20 (Improper Input Validation). Affects Rbe971 Firmware. An insufficient input validation vulnerability in NETGEAR Orbi routers allows attackers connected to the router's LAN to execute OS command injections.