CVE-2026-2873

CWE-119 — Buffer OverflowCWE-121 — Stack-based Buffer Overflow3 documents3 sources
Severity
7.4HIGH
EPSS
0.1%
top 73.33%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Tenda A21Tenda A21 Firmware
Timeline
PublishedFeb 21

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.

CVSS vector

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

Affected Packages2 packages

▶CVEListV5tenda/a211.0.0.0
▶NVDtenda/a21_firmware1.0.0.0

🔴Vulnerability Details

2
CVEList
Tenda A21 openSchedWifi setSchedWifi stack-based overflow↗2026-02-21
▶
GHSA
GHSA-6238-4w9x-vrrr: A vulnerability was detected in Tenda A21 1↗2026-02-21
▶