CVE-2021-20857: Elecom Wrc-2533ghbk-I Firmware

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

Cross-site scripting vulnerability in ELECOM LAN router WRC-2533GHBK-I firmware v1.20 and prior allows a remote authenticated attacker to inject an arbitrary script via unspecified vectors.

Affected products

• Elecom Wrc-2533ghbk-I Firmware: up to and including 1.20

Published 2021-12-01. Last modified 2026-06-17.