CVE-2026-9218: CWE-20 Improper input validation in NETGEAR CBR40
Description
CVE-2026-9218 is an input validation vulnerability in the NTP time server setting of the NETGEAR CBR40 router. An attacker with local network access and administrator credentials can execute unauthorized commands on the router. The vulnerability affects the integrity of the device but does not impact confidentiality or availability.
CVSS v4.0
Score 4.3medium
Affected software
NETGEAR
CBR40
NETGEAR
R7000
NETGEAR
R7000P
NETGEAR
RAX40
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from insufficient input validation in the NTP time server configuration of the NETGEAR CBR40 router. Exploitation requires the attacker to be connected to the router's local network and possess administrator credentials. Successful exploitation allows unauthorized command execution on the router, compromising its integrity. There is no reported impact on confidentiality or availability. The CVSS 4.0 base score is 4.3 (medium severity), reflecting the attack vector as adjacent network with low complexity and high privileges required.
Potential Impact
The vulnerability impacts the integrity of the affected NETGEAR CBR40 routers by allowing unauthorized command execution. There is no impact on confidentiality or availability according to the provided data.
Mitigation Recommendations
No patch or official fix information is provided in the vendor advisory or CVE data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict local network access to trusted administrators and monitor for unauthorized configuration changes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- NETGEAR
- Date Reserved
- 2026-05-21T17:29:15.526Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ace44e72cdf04f656782989
Added to database: 10/13/2026, 14:49:11 UTC
Last enriched: 10/13/2026, 15:03:40 UTC
Last updated: 10/13/2026, 15:08:20 UTC
Views: 5
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