CVE-2026-0640
Tenda AC23 PowerSaveSet sscanf buffer overflow
- State
- Published
- Severity
- 8.7 High
- Published
- Jan 6, 2026
- Updated
- Feb 23, 2026
- Reserved
- Jan 6, 2026
Description
A weakness has been identified in Tenda AC23 16.03.07.52. This affects the function sscanf of the file /goform/PowerSaveSet. Executing a manipulation of the argument Time can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 3.0 | 8.8 High | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 2.0 | 9.0 High | AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
AC23Tenda |
|
References
- VDB-339683 | Tenda AC23 PowerSaveSet sscanf buffer overflowvdb-entrytechnical-description
- VDB-339683 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #731772 | Tenda AC23 V16.03.07.52 Buffer Overflowthird-party-advisory
- https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.mdbroken-linkexploit
- https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md#pocbroken-linkexploit
- https://www.tenda.com.cn/product
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