Exploited Vulnerabilities DailyCVE-2021-27137: DD-WRT DD-WRT
EPSS3.9%No. 1465 of 1739 in KEV
CVE year2021~5 yrs before listing
Same vendor in KEV1
Same product1
| Field | Value |
|---|---|
| Vendor | DD-WRT |
| Product | DD-WRT |
| Name | DD-WRT Stack-Based Buffer Overflow Vulnerability |
| Added to KEV | 2026-07-21 |
| US federal due date | 2026-07-24 |
| Ransomware use | Unknown |
| CWE | CWE-121 |
CISA description
DD-WRT contains a stack-based buffer overflow vulnerability that could allow an unauthenticated attacker to overflow an internal buffer used by UPnP and trigger a code execution vulnerability.
Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page
A DD-WRT DD-WRT vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2026-07-21.