DD-WRT vulnerabilities
- DD-WRT has 1 CVE record published between 28 Oct 2023 and 28 Oct 2026, ranking #352 of 420 vendors on this site by that count.
- Of the 1 with a CVSS score, 1 (100%) are rated critical or high; 0 (0% of all) have no CVSS score.
- 1 vulnerability attributed to DD-WRT is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog; the most recent, CVE-2021-27137, was added on 21 Jul 2026.
- It is marked as known to be used in ransomware campaigns.
- For the 1 KEV entry with a published CVE record, the median time from CVE publication to KEV listing is 5 days.
Records are attributed to DD-WRT from the vendor named in the source records. About the data.
CVE records per year
Show data as a table
| Year | CVE records |
|---|---|
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 1 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 0 |
| 2026 | 1 |
2026 is partial (through 28 Oct 2026), shown in a lighter bar.
| Year | Records | Critical | High | Critical or high | Not scored |
|---|---|---|---|---|---|
| 2026 | 1 | 0 | 1 | 100% | 0% |
| 2025 | 0 | 0 | 0 | — | — |
| 2024 | 0 | 0 | 0 | — | — |
| 2023 | 0 | 0 | 0 | — | — |
| 2022 | 1 | 0 | 0 | 0% | 0% |
| 2021 | 0 | 0 | 0 | — | — |
| 2020 | 0 | 0 | 0 | — | — |
| 2019 | 0 | 0 | 0 | — | — |
| 2018 | 0 | 0 | 0 | — | — |
| 2017 | 0 | 0 | 0 | — | — |
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Exploited vulnerabilities in CISA's KEV catalog
| CVE | Product | Name | Added | Ransomware |
|---|---|---|---|---|
| CVE-2021-27137 | DD-WRT | DD-WRT Stack-Based Buffer Overflow Vulnerability | 2026-07-21 | Unknown |
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.
Highest exploit-prediction scores (EPSS)
EPSS estimates the probability that a vulnerability is exploited in the next 30 days. These are the 2 highest-scoring DD-WRT records today.
| CVE | EPSS | Percentile | Severity | In KEV |
|---|---|---|---|---|
| CVE-2021-27137 | 4% | 90.5% | High | Yes |
| CVE-2022-27631 | 1.2% | 67.7% | Medium | No |
Source: FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.27, as of 27 Oct 2026. About the data.