CVE-2026-2874

A flaw has been found in Tenda A21 1.0.0.0. Impacted is the function form_fast_setting_wifi_set of the file /goform/fast_setting_wifi_set. Executing a manipulation of the argument ssid can lead to stack-based buffer overflow. It is possible to launch the attack 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://github.com/QIU-DIE/cve-nneeww/issues/5	Exploit Issue Tracking Mitigation Third Party Advisory
https://vuldb.com/?ctiid.347111	Permissions Required VDB Entry
https://vuldb.com/?id.347111	Third Party Advisory VDB Entry
https://vuldb.com/?submit.754636	Third Party Advisory VDB Entry
https://www.tenda.com.cn/	Product

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tenda:a21_firmware:1.0.0.0:*:*:*:*:*:*:*

cpe:2.3:h:tenda:a21:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-21 18:15

Updated : 2026-02-23 20:09

NVD link : CVE-2026-2874

Mitre link : CVE-2026-2874

CVE.ORG link : CVE-2026-2874

JSON object : View

Products Affected

tenda

a21_firmware
a21

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow

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