CVE-2026-0640

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.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md	Exploit Third Party Advisory
https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md#poc	Exploit Third Party Advisory
https://vuldb.com/?ctiid.339683	Permissions Required VDB Entry
https://vuldb.com/?id.339683	Third Party Advisory VDB Entry
https://vuldb.com/?submit.731772	Third Party Advisory VDB Entry
https://www.tenda.com.cn/	Product

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tenda:ac23_firmware:16.03.07.52:*:*:*:*:*:*:*

cpe:2.3:h:tenda:ac23:-:*:*:*:*:*:*:*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Se ha identificado una debilidad en Tenda AC23 16.03.07.52. Esto afecta a la función sscanf del archivo /goform/PowerSaveSet. La ejecución de una manipulación del argumento Time puede llevar a un desbordamiento de búfer. El ataque puede lanzarse remotamente. El exploit se ha puesto a disposición del público y podría ser utilizado para ataques.

Information

Published : 2026-01-06 16:15

Updated : 2026-10-26 21:10

NVD link : CVE-2026-0640

Mitre link : CVE-2026-0640

CVE.ORG link : CVE-2026-0640

JSON object : View

Products Affected

tenda

ac23_firmware
ac23

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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