CVE-2026-4254

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-4254
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.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0 /10

CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.md Exploit Third Party Advisory
https://vuldb.com/?ctiid.351212 Permissions Required VDB Entry
https://vuldb.com/?id.351212 Third Party Advisory VDB Entry
https://vuldb.com/?submit.771773 Third Party Advisory VDB Entry
https://www.tenda.com.cn/ Product
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:tenda:ac8_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:tenda:ac8:5.0:*:*:*:*:*:*:*
History

20 Mar 2026, 13:35

Type Values Removed Values Added
CPE cpe:2.3:o:tenda:ac8_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:tenda:ac8:5.0:*:*:*:*:*:*:*
CWE CWE-787
First Time Tenda
Tenda ac8
Tenda ac8 Firmware
References () https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.md - () https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.md - Exploit, Third Party Advisory
References () https://vuldb.com/?ctiid.351212 - () https://vuldb.com/?ctiid.351212 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.351212 - () https://vuldb.com/?id.351212 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.771773 - () https://vuldb.com/?submit.771773 - Third Party Advisory, VDB Entry
References () https://www.tenda.com.cn/ - () https://www.tenda.com.cn/ - Product
Summary
  • (es) Se ha identificado una debilidad en Tenda AC8 hasta la versión 16.03.50.11. Esta vulnerabilidad afecta a la función doSystemCmd del archivo /goform/SysToolChangePwd del componente Endpoint HTTP. Esta manipulación del argumento local_2c causa un desbordamiento de búfer basado en pila. El ataque puede iniciarse remotamente. El exploit se ha puesto a disposición del público y podría usarse para ataques.

16 Mar 2026, 18:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-16 18:16

Updated : 2026-03-20 13:35

NVD link : CVE-2026-4254

Mitre link : CVE-2026-4254

CVE.ORG link : CVE-2026-4254

JSON object : View

Products Affected

tenda

  • ac8
  • ac8_firmware
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow

CWE-787

Out-of-bounds Write