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.

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://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

No history.

Information

Published : 2026-03-26 23:16

Updated : 2026-06-17 10:57

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

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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."}, {"lang": "es", "value": "Se ha encontrado una falla en Tenda AC5 15.03.06.47. Esta vulnerabilidad afecta a la funci\u00f3n formQuickIndex del archivo /goform/QuickIndex del componente Gestor de Solicitudes POST. Esta manipulaci\u00f3n del argumento PPPOEPassword causa un desbordamiento de b\u00fafer basado en pila. El ataque puede iniciarse de forma remota. El exploit ha sido publicado y puede ser utilizado."}], "lastModified": "2026-06-17T10:57:25.563", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:tenda:ac5_firmware:15.03.06.47:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2D94CA12-3FED-4730-B1B4-4F6AAA3AB17E"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:tenda:ac5:1.0:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "D141716B-56F0-4061-9D87-943B7858F2F4"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cna@vuldb.com"}