CVE-2021-21727 : Vulnerability Insights and Analysis
Learn about CVE-2021-21727, a DoS vulnerability in ZTE ZXHN F623 devices up to V6.0.0P3T33. Explore impact, affected systems, and mitigation steps.
A ZTE product has a denial of service (DoS) vulnerability that allows a remote attacker to disrupt device operation by sending specially crafted IPv6 packets. This CVE affects the ZXHN F623 devices up to version V6.0.0P3T33.
Understanding CVE-2021-21727
This CVE identifies a DoS vulnerability in ZTE's ZXHN F623 devices, exposing them to potential disruption from remote attackers.
What is CVE-2021-21727?
CVE-2021-21727 is a security vulnerability in ZTE products that enables attackers to launch DoS attacks by manipulating IPv6 packets.
The Impact of CVE-2021-21727
The vulnerability allows malicious actors to disrupt the normal operation of ZTE ZXHN F623 devices, leading to denial of service incidents.
Technical Details of CVE-2021-21727
This section delves into the specifics of the vulnerability in terms of description, affected systems, versions, and exploitation methods.
Vulnerability Description
A flaw in ZTE's ZXHN F623 devices permits cyber attackers to impair device functionality through the transmission of malicious IPv6 packets.
Affected Systems and Versions
The vulnerability impacts all versions of ZXHN F623 up to V6.0.0P3T33, leaving these devices susceptible to DoS attacks.
Exploitation Mechanism
By sending specially crafted IPv6 packets to the vulnerable devices, attackers can exploit this flaw to disrupt the ZXHN F623 operations.
Mitigation and Prevention
Discover the necessary steps to mitigate the risks posed by CVE-2021-21727 and safeguard systems against potential attacks.
Immediate Steps to Take
Promptly apply security patches or updates provided by ZTE to address the vulnerability and protect ZXHN F623 devices from exploitation.
Long-Term Security Practices
Implement robust security measures, including network segmentation, firewall rules, and intrusion detection systems to fortify the overall resilience of the IT infrastructure.
Patching and Updates
Regularly monitor for security advisories from ZTE and promptly apply patches or updates to ensure the continued security of the ZXHN F623 devices.