High severity · published Feb 9, 2026
CVE-2026-2202
Tenda AC8 httpd WifiGuestSet fromSetWifiGusetBasic buffer overflow
8.8
CVSS
0.8%
EPSS
No
On KEV
Description
A vulnerability was detected in Tenda AC8 16.03.33.05. Affected is the function fromSetWifiGusetBasic of the file /goform/WifiGuestSet of the component httpd. The manipulation of the argument shareSpeed results in buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.
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)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
AC8 · Tenda
16.03.33.05 · source: vendor
AF
Ac8 Firmware · Tenda
16.03.33.05 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2202
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2202
Exploit
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/AC8/WifiGuestSet-sharespeed-bufferoverflow.md
Exploit
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/Tenda/AC8/WifiGuestSet-sharespeed-bufferoverflow.md#poc
Permissions Required
https://vuldb.com/?ctiid.344905
Third Party Advisory
https://vuldb.com/?id.344905
Third Party Advisory
https://vuldb.com/?submit.750225
Product
https://www.tenda.com.cn/
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