THREAT OPS › CVEs › CVE-2021-27137
CVE-2021-27137 — DD-WRT Stack-Based Buffer Overflow Vulnerability
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.
Vulnerability details
- Affected productsDD-WRT
- KEV remediation due2026-07-24
Related reporting
- July 2026 CVE Landscaperecordedfuture
- CISA Adds Four Known Exploited Vulnerabilities to Catalogcisa_advisories
- [CISA KEV] CVE-2021-27137 — DD-WRT DD-WRT: DD-WRT Stack-Based Buffer Overflow Vulnerabilitycisa_kev
- June 2026 CVE Landscaperecordedfuture