CVE-2026-2909: Tenda HG9 Diagnostic Ping Endpoint formPing 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: 2026-02-22 · updated 2026-06-17
Weakness: CWE-119

Description

A vulnerability was detected in Tenda HG9 300001138. This affects an unknown part of the file /boaform/formPing of the component Diagnostic Ping Endpoint. Performing a manipulation of the argument pingAddr results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.

Affected products

Tenda HG9: 300001138

References

https://github.com/QIU-DIE/cve-nneeww/issues/11
https://vuldb.com/?ctiid.347218
https://vuldb.com/?id.347218
https://vuldb.com/?submit.755211
https://www.tenda.com.cn/

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