DD-WRT — known exploited vulnerabilities
The CISA Known Exploited Vulnerabilities catalog (KEV) lists vulnerabilities that CISA has confirmed are being exploited in the wild; U.S. federal civilian agencies are required to remediate each entry by its due date. This page joins the KEV entries for DD-WRT with NVD CVSS scores and CISA's ransomware-campaign flag. See our methodology or browse all CVEs.
Key findings
CISA's Known Exploited Vulnerabilities catalog lists 1 DD-WRT vulnerability confirmed as exploited in the wild across 1 product; none is currently flagged as used in known ransomware campaigns. All entries affect a single product: DD-WRT. CISA added 1 entry in 2026 so far, compared with 0 in 2025. Across the 1 entry with an NVD CVSS score (100% of the total), the average score is 8.1; none is rated critical by NVD. The most recent addition is CVE-2021-27137 (DD-WRT Stack-Based Buffer Overflow Vulnerability), added on 2026-07-21.
Affected products
| Product | Entries | Share |
|---|---|---|
| DD-WRT | 1 | 100% |
Entries added per year
By date added to the KEV catalog
Exploited DD-WRT vulnerabilities (1)
Newest first. CVSS scores from NVD where available.
| CVE | Product | Vulnerability | Date added | Ransomware | CVSS |
|---|---|---|---|---|---|
| CVE-2021-27137 | DD-WRT | DD-WRT Stack-Based Buffer Overflow Vulnerability | 2026-07-21 | — | HIGH8.1 |
Source: CISA Known Exploited Vulnerabilities catalog, joined with NIST NVD CVSS data. Vendor names are normalized across spellings. Compare all vendors.