CVE-2026-104611: Tenda AC9 POST Request fast_setting_internet_set stack-based overflow

Severity: critical (CVSS 9.1 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: 2026-10-02 · updated 2026-10-02
Weakness: CWE-119

Description

A vulnerability was detected in Tenda AC9 15.03.02.13. Affected is an unknown function of the file /goform/fast_setting_internet_set of the component POST Request Handler. Performing a manipulation of the argument netWanType 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 AC9: 15.03.02.13

References

https://github.com/ZaneBoden/CVEs/blob/main/Tenda-AC9-fast_setting_internet_set.md
https://vuldb.com/cve/CVE-2026-104611
https://vuldb.com/submit/962720
https://vuldb.com/vuln/412918
https://vuldb.com/vuln/412918/cti
https://www.tenda.com.cn/

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