Disclosure summary
A security flaw has been discovered in Tenda AC21 up to 16.03.08.16. Affected by this vulnerability is the function sscanf of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be exploited.
Source-reported weakness categories
CWE-119, CWE-120
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2025-11091
Open original source · Updated Oct 09, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| tenda | ac21_firmware | * {"versionEndIncluding":"16.03.08.16"} |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Exploit, Issue Tracking
- vuldb.com — Permissions Required, VDB Entry
- vuldb.com — Third Party Advisory, VDB Entry
- vuldb.com — Third Party Advisory, VDB Entry
- www.tenda.com.cn — Product
- github.com — Exploit, Issue Tracking
PUBLISHED 2025-09-27T22:15:31-04:00
MODIFIED 2026-10-09T06:10:00-04:00
INGESTED 2026-10-10T20:50:23-04:00