CVE-2020-29557

dlink dir-825 r1 firmware

Published 29 Jan 2021 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, with a remediation deadline of 3 May 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

Description

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.

References

shaqed.github.io/dlink/ · Broken Link, Exploit, Third Party Advisory
www.dlink.ru/ru/download2/5/19/2354/441/ · Product
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-29557 · US Government Resource