CVE-2020-29557: D-Link DIR-825 R1 Devices Buffer Overflow Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 54.3% chance of exploitation in the next 30 days.

An issue was discovered on D-Link DIR-825 R1 devices through 3.0.1 before 2020-11-20. A buffer overflow in the web interface allows attackers to achieve pre-authentication remote code execution.

Affected products

• D-Link DIR-825 r1 Firmware: up to and including 3.0.1

Published 2021-01-29. Last modified 2026-06-17.