CVE-2021-21743: ZTE MF971R Firmware

Medium severity, CVSS 4.3. EPSS: 0.9% chance of exploitation in the next 30 days.

ZTE MF971R product has a CRLF injection vulnerability. An attacker could exploit the vulnerability to modify the HTTP response header information through a specially crafted HTTP request.

Affected products

• ZTE MF971R Firmware: version v1.0.0b05 only; version 1v1.0.0b06 only; version 2v1.0.0b03 only; version s2v1.0.0b03 only; version sv1.0.0b05 only

Published 2021-10-20. Last modified 2026-06-17.