DD-WRT CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

Known exploited DD-WRT CVE published 2026-07-21

CVE-2021-27137

A stack-based buffer overflow vulnerability exists in DD-WRT, a popular open-source router firmware. This issue is known to be exploited in the wild, posing significant risks to defenders. Immediate attention is required from defenders to assess exposure and apply mitigations according to vendor instructions. The vulnerability allows for potential code execution and disruption to services, emphasizing the [truncated]