CVE-2026-86165: Tenda HG10 formURL buffer overflow

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-06 · updated 2026-09-08
Weakness: CWE-119

Description

A vulnerability was found in Tenda HG10 300001138. This vulnerability affects the function formURL of the file /boaform/admin/formURL. Performing a manipulation of the argument Keywd/urlFQDN results in buffer overflow. The attack may be initiated remotely. The exploit has been made public and could be used.

Affected products

Tenda HG10: 300001138

References

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/HG10/bof-formURL-keywd.md
https://vuldb.com/cve/CVE-2026-86165
https://vuldb.com/submit/895583
https://vuldb.com/submit/895594
https://vuldb.com/vuln/399304
https://vuldb.com/vuln/399304/cti
https://www.tenda.com.cn/
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/HG10/bof-formURL-keywd.md

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