High severity · published Sep 6, 2026
CVE-2026-86166
Tenda HG10 Boa Web Server formWanRedirect buffer overflow
8.8
CVSS
0.9%
EPSS
No
On KEV
Description
A vulnerability was determined in Tenda HG10 300001138. This issue affects the function formWanRedirect of the file /boaform/formWanRedirect of the component Boa Web Server. Executing a manipulation of the argument if can lead to buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HG
HG10 · Tenda
300001138 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86166
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86166
github.com
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/HG10/bof-formWanRedirect-if.md
vuldb.com
https://vuldb.com/cve/CVE-2026-86166
vuldb.com
https://vuldb.com/submit/895595
vuldb.com
https://vuldb.com/vuln/399305
vuldb.com
https://vuldb.com/vuln/399305/cti
www.tenda.com.cn
https://www.tenda.com.cn/
More from HG10
10.0
CVE-2026-82542
Tenda HG10 Boa Web Server formIPv6Routing buffer overflow
9.9
CVE-2026-86167
Tenda HG10 Boa formgponConf os command injection
9.8
CVE-2026-86165
Tenda HG10 formURL buffer overflow
9.8
CVE-2026-85109
Tenda HG10 Boa Web Server formLogin buffer overflow
8.8
CVE-2026-85110
Tenda HG10 Boa Web Server formWlanSetup buffer overflow