What’s Vulnerable › Vulnerabilities

CVE-2026-2872: Tenda A21 MAC Filtering Configuration Endpoint setBlackRule set_device_name stack-based overflow

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-21 · updated 2026-06-17
• Weakness: CWE-119

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.

Affected products

• Tenda A21: 1.0.0.0

References

• https://github.com/QIU-DIE/cve-nneeww/issues/3
• https://vuldb.com/?ctiid.347109
• https://vuldb.com/?id.347109
• https://vuldb.com/?submit.754634
• https://www.tenda.com.cn/

Get alerted when CVE-2026-2872 or the next vulnerability affects your stack