Critical severity · published Sep 3, 2026
CVE-2026-85109
Tenda HG10 Boa Web Server formLogin buffer overflow
9.8
CVSS
1.1%
EPSS
No
On KEV
Description
A vulnerability was determined in Tenda HG10 300001138. This issue affects the function formLogin of the file /boaform/formLogin of the component Boa Web Server. Executing a manipulation of the argument Username 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:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% 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-2026-85109
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85109
github.com
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/HG10/bof-formLogin_username.md
vuldb.com
https://vuldb.com/cve/CVE-2026-85109
vuldb.com
https://vuldb.com/submit/891994
vuldb.com
https://vuldb.com/vuln/398315
vuldb.com
https://vuldb.com/vuln/398315/cti
www.tenda.com.cn
https://www.tenda.com.cn/
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