dd-wrt vulnerabilities and fixes

Recent CVEs affecting dd-wrt, with upgrade or downgrade steps. 1 tracked.

Also searched as: dd wrt.

dd-wrt has 1 tracked vulnerability, 0 critical and 1 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 1. Most recent: 2026-07-16. Highest priority: CVE-2021-27137 (score 86/100).

• CVE-2021-27137 HIGH 8.1 EXPLOITED UPGRADE DD-WRT Stack-Based Buffer Overflow Vulnerability

FAQ

How do I fix dd-wrt vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is dd-wrt being exploited right now?

Yes: 1 dd-wrt CVE is on the CISA Known Exploited Vulnerabilities list, so patch it first.

Which dd-wrt CVE should I patch first?

CVE-2021-27137 currently ranks highest (86/100): DD-WRT Stack-Based Buffer Overflow Vulnerability.

← Back to latest CVEs