Actively exploited in the wild
D-Link DIR-825 R1 Devices Buffer Overflow Vulnerability
D-Link - DIR-825 R1 Devices · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2020-29557
CriticalCVSS 9.8KEVSummary
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.
Risk Assessment
An unauthenticated attacker can remotely execute arbitrary code on the device, leading to full compromise of the router and the network.
Recommendation
Update the router firmware to a version newer than 3.0.1 (released after 2020-11-20) and restrict web interface access from the WAN.
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Original NVD description (English source)
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.