CVE-2026-2886: high-severity vulnerability in Tenda A21
Tenda A21 SetOnlineDevName set_device_name stack-based overflow
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.6%
A weakness has been identified in Tenda A21 1.0.0.0. This affects the function set_device_name of the file /goform/SetOnlineDevName. This manipulation of the argument devName causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
Tenda · A21Related CVEs — Tenda A21
In the same product, most dangerous first.
CVE-2026-2871HIGHTenda A21 SetIpMacBind fromSetIpMacBind stack-based overflowEPSS 0.8%CVE-2026-2870HIGHTenda A21 formSetQosBand set_qosMib_list stack-based overflowEPSS 0.7%CVE-2026-2874HIGHTenda A21 fast_setting_wifi_set form_fast_setting_wifi_set stack-based overflowEPSS 0.6%CVE-2026-2873HIGHTenda A21 openSchedWifi setSchedWifi stack-based overflowEPSS 0.6%CVE-2026-2872HIGHTenda A21 MAC Filtering Configuration Endpoint setBlackRule set_device_name stack-based overflowEPSS 0.6%