CVE-2021-35395
CISA KEVPublished November 3, 2021 · Updated April 3, 2026
high
Official 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).
Affected Products
| Vendor | Product |
|---|---|
| Realtek | AP-Router SDK |
Patch Status
Patch by 2021-11-17
Recommended Actions
- Check if your systems use any of the affected products listed above.
- Apply vendor patches immediately if available.
- This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
- Monitor vendor advisories for updates and additional mitigations.
- Review logs for indicators of compromise related to CVE-2021-35395.