New Mirai campaign exploits RCE flaw in EoL D-Link routers

BleepingComputer

April 22, 2026 at 8:04 PM

Actively Exploited

CVE Exploit Vulnerability Malware Botnet DDoS RCE

Overview

A new campaign linked to the Mirai malware is exploiting a serious command-injection vulnerability in D-Link DIR-823X routers, identified as CVE-2025-29635. This vulnerability allows attackers to take control of the routers and integrate them into a botnet. Users of these routers are at risk as their devices can be hijacked for malicious purposes, including launching distributed denial-of-service (DDoS) attacks. This situation is particularly concerning since the affected routers are at the end of their life cycle, meaning they are unlikely to receive security updates. It’s crucial for users to be aware of this exploit and take necessary precautions to secure their networks.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: D-Link DIR-823X routers
Action Required: Users should consider disconnecting their devices from the internet and replacing them with supported models.
Timeline: Newly disclosed

Original Article Summary

A new Mirai-based malware campaign is actively exploiting CVE-2025-29635, a high-severity command-injection vulnerability affecting D-Link DIR-823X routers, to enlist devices into the botnet. [...]

Impact

D-Link DIR-823X routers

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Users should consider disconnecting their devices from the internet and replacing them with supported models. If replacement is not immediately possible, changing default passwords and disabling remote management features can help mitigate risks.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Exploit, Vulnerability, and 4 more.

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