In early 2021, security researchers discovered a vulnerability in the MC801A’s web server that allowed a remote attacker to bypass login credentials (CVE-2021-26728). If you are still running a pre-2021 firmware (B03 or older), your device is vulnerable to this exploit.
All 2021 firmware builds (B07+) contain the patch for this critical vulnerability. Updating is not just about features; it’s about preventing your 5G gateway from becoming part of a botnet. zte mc801a firmware 2021
Warning: Updating firmware can reset your settings. Backup your APN and WiFi configurations. Updating is not just about features; it’s about
Below is a timeline of the major firmware iterations seen in 2021. Note that version numbers may vary slightly depending on your specific hardware revision (e.g., MC801A vs MC801A-1B). Below is a timeline of the major firmware
| Version Code | Approx. Release | Key Changes | | :--- | :--- | :--- | | B09 | Early 2021 | Initial wide release. Fixed major DNS leakage issues. Prone to random reboots under heavy load. | | B11 | Mid 2021 | Highly Recommended. Optimized CPU load. Better handling of 5G handover. Improved Web UI response time. | | B13 | Late 2021 | Interim build. Improved IPv6 stability for UK networks (Three/EE). | | B15 | End 2021 | Major stability patch. Better heat management. Restricted band locking on some carrier variants. |