CVE-2021-45639 : Exploit Details and Defense Strategies
Learn about CVE-2021-45639 affecting certain NETGEAR devices with a Medium severity level. Find out the impacted systems, exploitation details, and mitigation steps.
Certain NETGEAR devices are affected by reflected XSS vulnerability.
Understanding CVE-2021-45639
What is CVE-2021-45639?
Certain NETGEAR devices are susceptible to reflected XSS, including models like CBR40, EAX20, R7000, and more.
The Impact of CVE-2021-45639
The vulnerability has a CVSS base score of 5.2 (Medium severity) and requires user interaction for exploitation. It can lead to low confidentiality and integrity impacts.
Technical Details of CVE-2021-45639
Vulnerability Description
The vulnerability allows attackers to execute malicious scripts in the context of a user's web browser.
Affected Systems and Versions
- CBR40 before 2.5.0.10
- EAX20 before 1.0.0.32
- R7000 before 1.0.11.110
- Many other NETGEAR models before specific versions
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Adjacent Network
- Privileges Required: None
- Scope: Changed
Mitigation and Prevention
Immediate Steps to Take
- Update affected devices to the latest firmware.
- Avoid clicking on suspicious links or visiting untrusted websites.
Long-Term Security Practices
- Regularly monitor security advisories from NETGEAR and apply patches promptly.
Patching and Updates
Ensure all NETGEAR devices are running the latest firmware to mitigate the risk of the reflected XSS vulnerability.