CVE-2026-11553: Tenda HG7/HG9/HG10 formPPPEdit stack-based overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-08 · updated 2026-10-02
Weakness: CWE-119

Description

A vulnerability was found in Tenda HG7, HG9 and HG10 300001138_en_xpon. This affects the function formPPPEdit of the file /boaform/formPPPEdit. The manipulation of the argument encodename results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.

Affected products

Tenda HG10: 300001138_en_xpon
Tenda HG7: 300001138_en_xpon
Tenda HG9: 300001138_en_xpon

References

https://github.com/xiezhihua-1127/Tenda-Stack-Overflow.git
https://github.com/xiezhihua-1127/Tenda-Stack-Overflow/blob/main/report.md
https://vuldb.com/cve/CVE-2026-11553
https://vuldb.com/submit/836778
https://vuldb.com/vuln/369163
https://vuldb.com/vuln/369163/cti
https://www.tenda.com.cn/

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