Vulnerability Description
A weakness has been identified in Tenda AC8 up to 16.03.50.11. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulation of the argument local_2c causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tenda | Ac8 Firmware | <= 16.03.50.11 |
| Tenda | Ac8 | 5.0 |
Related Weaknesses (CWE)
References
- https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysExploitThird Party Advisory
- https://vuldb.com/?ctiid.351212Permissions RequiredVDB Entry
- https://vuldb.com/?id.351212Third Party AdvisoryVDB Entry
- https://vuldb.com/?submit.771773Third Party AdvisoryVDB Entry
- https://www.tenda.com.cn/Product
FAQ
What is CVE-2026-4254?
CVE-2026-4254 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A weakness has been identified in Tenda AC8 up to 16.03.50.11. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulatio...
How severe is CVE-2026-4254?
CVE-2026-4254 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-4254?
Check the references section above for vendor advisories and patch information. Affected products include: Tenda Ac8 Firmware, Tenda Ac8.