November 3, 2021 · Applied Cybernetics Group
CVE-2021-35395 — Realtek AP-Router SDK
Realtek AP-Router SDK Buffer Overflow Vulnerability
- Added to KEV
2021-11-03- Federal due date
2021-11-17- Vendor
- Realtek
- Product
- AP-Router SDK
- EPSS
- 99.9th percentile (score 0.937, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-35395
CISA short description
Realtek AP-Router SDK HTTP web server boa contains a buffer overflow vulnerability due to unsafe copies of some overly long parameters submitted in the form that lead to denial-of-service (DoS).
Required action
Apply updates per vendor instructions.