CVE-2026-2873
High
Description
A vulnerability was detected in Tenda A21 1.0.0.0. This issue affects the function setSchedWifi of the file /goform/openSchedWifi. Performing a manipulation of the argument schedStartTime/schedEndTime results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used.
SeverityHigh
CVSS8.8
Exploit probability—
ProductTenda A21 Firmware
PublishedFeb 21, 2026
First seenFeb 21, 2026
Weakness typeCWE-121CWE-121CWE-119Memory buffer bounds error
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tenda a21_firmware | 1.0.0.0 | — |
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