December 2021 saw the infamous Log4Shell exploit. While the F671Y isn’t a Java application server, upstream CPE management protocols (TR-069) required patching. ZTE pushed a security-hardened firmware to prevent remote code execution attempts via the web GUI.
is usually an ISP-managed device, updates are often pushed automatically by your provider. However, you can check manually: zte+f671y+firmware+update+2021
Click on or Browse to select the firmware file you downloaded. (Ensure this file is obtained directly from your ISP or authorized support portals). Click the Upgrade or Update button. December 2021 saw the infamous Log4Shell exploit
the device during this process, as it can cause permanent damage (bricking). zte+f671y+firmware+update+2021