CVE-2026-2872

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 security vulnerability has been detected in Tenda A21 1.0.0.0. This vulnerability affects the function set_device_name of the file /goform/setBlackRule of the component MAC Filtering Configuration Endpoint. Such manipulation of the argument devName/mac leads to stack-based buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly 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 MAC Filtering Configuration Endpoint setBlackRule set_device_name stack-based overflow↗2026-02-21
▶
GHSA
GHSA-2j3g-5jhm-r285: A security vulnerability has been detected in Tenda A21 1↗2026-02-21
▶