CVE-2021-45626 Explained : Impact and Mitigation
Learn about CVE-2021-45626 affecting NETGEAR devices. Command injection vulnerability allows unauthorized control. Find mitigation steps and update information.
Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This impacts various models before specific versions.
Understanding CVE-2021-45626
What is CVE-2021-45626?
Certain NETGEAR devices are vulnerable to command injection by an unauthenticated attacker, affecting specific models before certain versions.
The Impact of CVE-2021-45626
The vulnerability has a CVSSv3.1 base score of 9.6 (Critical severity) with high impacts on availability, confidentiality, and integrity. An attacker can exploit the issue without any privileges required.
Technical Details of CVE-2021-45626
Vulnerability Description
The vulnerability allows an unauthenticated attacker to execute commands on affected NETGEAR devices.
Affected Systems and Versions
- RBK20, RBR20, RBS20 before 2.6.1.36
- RBK40, RBR40, RBS40 before 2.6.1.36
- RBK50, RBR50, RBS50 before 2.6.1.40
- RBS50Y before 2.6.1.40
Exploitation Mechanism
The attack complexity is low, requiring adjacent network access. Exploitation impacts availability, confidentiality, and integrity of the system.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by NETGEAR for the affected devices.
- Restrict network access to vulnerable devices.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update devices with the latest firmware releases.
- Implement network segmentation to isolate critical devices.
Patching and Updates
- NETGEAR has released patches addressing the command injection vulnerability. Ensure timely installation of these updates to secure the devices.