CVE-2026-4903

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-4903
A flaw has been found in Tenda AC5 15.03.06.47. This vulnerability affects the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. This manipulation of the argument PPPOEPassword causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been published and may be used.

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://lavender-bicycle-a5a.notion.site/Tenda_AC5_QuickIndex_PPPOEPassword-32053a41781f808dae98f99c99bcb21c?source=copy_link Exploit Third Party Advisory
https://vuldb.com/?ctiid.353654 Permissions Required VDB Entry
https://vuldb.com/?id.353654 Third Party Advisory VDB Entry
https://vuldb.com/?submit.777380 Third Party Advisory VDB Entry
https://www.tenda.com.cn/ Product
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:tenda:ac5_firmware:15.03.06.47:*:*:*:*:*:*:*
cpe:2.3:h:tenda:ac5:1.0:*:*:*:*:*:*:*
History

31 Mar 2026, 21:08

Type Values Removed Values Added
References () https://lavender-bicycle-a5a.notion.site/Tenda_AC5_QuickIndex_PPPOEPassword-32053a41781f808dae98f99c99bcb21c?source=copy_link - () https://lavender-bicycle-a5a.notion.site/Tenda_AC5_QuickIndex_PPPOEPassword-32053a41781f808dae98f99c99bcb21c?source=copy_link - Exploit, Third Party Advisory
References () https://vuldb.com/?ctiid.353654 - () https://vuldb.com/?ctiid.353654 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.353654 - () https://vuldb.com/?id.353654 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.777380 - () https://vuldb.com/?submit.777380 - Third Party Advisory, VDB Entry
References () https://www.tenda.com.cn/ - () https://www.tenda.com.cn/ - Product
CPE cpe:2.3:o:tenda:ac5_firmware:15.03.06.47:*:*:*:*:*:*:*
cpe:2.3:h:tenda:ac5:1.0:*:*:*:*:*:*:*
First Time Tenda
Tenda ac5 Firmware
Tenda ac5
CWE CWE-787

30 Mar 2026, 13:26

Type Values Removed Values Added
Summary
  • (es) Se ha encontrado una falla en Tenda AC5 15.03.06.47. Esta vulnerabilidad afecta a la función formQuickIndex del archivo /goform/QuickIndex del componente Gestor de Solicitudes POST. Esta manipulación del argumento PPPOEPassword causa un desbordamiento de búfer basado en pila. El ataque puede iniciarse de forma remota. El exploit ha sido publicado y puede ser utilizado.

26 Mar 2026, 23:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-26 23:16

Updated : 2026-03-31 21:08

NVD link : CVE-2026-4903

Mitre link : CVE-2026-4903

CVE.ORG link : CVE-2026-4903

JSON object : View

Products Affected

tenda

  • ac5
  • ac5_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