What’s Vulnerable › Vulnerabilities

CVE-2026-2873: Tenda A21 openSchedWifi setSchedWifi 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 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.

Affected products

• Tenda A21: 1.0.0.0

References

• https://github.com/QIU-DIE/cve-nneeww/issues/4
• https://vuldb.com/?ctiid.347110
• https://vuldb.com/?id.347110
• https://vuldb.com/?submit.754635
• https://www.tenda.com.cn/

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