CVE-2020-6872: ZTE r5300g4 Firmware

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

The server management software module of ZTE has a storage XSS vulnerability. The attacker inserts some attack codes through the foreground login page, which will cause the user to execute the predefined malicious script in the browser. This affects <R5300G4V03.08.0100/V03.07.0300/V03.07.0200/V03.07.0108/V03.07.0100/V03.05.0047/V03.05.0046/V03.05.0045/V03.05.0044/V03.05.0043/V03.05.0040/V03.04.0020;R8500G4V03.07.0103/V03.07.0101/V03.06.0100/V03.05.0400/V03.05.0020;R5500G4V03.08.0100/V03.07.0200/V03.07.0100/V03.06.0100>.

Affected products

• ZTE r5300g4 Firmware: version 03.04.0020 only; version 03.05.0040 only; version 03.05.0043 only; version 03.05.0044 only; version 03.05.0045 only; version 03.05.0046 only; …
• ZTE r5500g4 Firmware: version 03.06.0100 only; version 03.07.0100 only; version 03.07.0200 only; version 03.08.0100 only
• ZTE r8500g4 Firmware: version 03.05.0020 only; version 03.05.0400 only; version 03.06.0100 only; version 03.07.0101 only; version 03.07.0103 only

Published 2020-07-20. Last modified 2026-06-17.