CVE-2026-0640

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

8.8 /10

CVSS v3 : HIGH

V3 Legend

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

V2 Legend

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

15 Jan 2026, 19:17

Type Values Removed Values Added
CPE cpe:2.3:h:tenda:ac23:-:*:*:*:*:*:*:*
cpe:2.3:o:tenda:ac23_firmware:16.03.07.52:*:*:*:*:*:*:*
First Time Tenda
Tenda ac23 Firmware
Tenda ac23
References () https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md - () https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md - Exploit, Third Party Advisory
References () https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md#poc - () https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md#poc - Exploit, Third Party Advisory
References () https://vuldb.com/?ctiid.339683 - () https://vuldb.com/?ctiid.339683 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.339683 - () https://vuldb.com/?id.339683 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.731772 - () https://vuldb.com/?submit.731772 - Third Party Advisory, VDB Entry
References () https://www.tenda.com.cn/ - () https://www.tenda.com.cn/ - Product

06 Jan 2026, 16:15

Type Values Removed Values Added
New CVE
Information

Published : 2026-01-06 16:15

Updated : 2026-01-15 19:17

NVD link : CVE-2026-0640

Mitre link : CVE-2026-0640

CVE.ORG link : CVE-2026-0640

JSON object : View

Products Affected

tenda

  • ac23
  • ac23_firmware
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')