Critical severity · published Oct 6, 2026
CVE-2026-105778
Tenda AC5 Wifi setWifi stack-based overflow
9.9
CVSS
0.5%
EPSS
No
On KEV
Description
A vulnerability has been found in Tenda AC5 02.03.01.111_multi. Affected by this issue is some unknown functionality of the file /goform/setWifi of the component Wifi Handler. Such manipulation of the argument wifiPwd leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
AC5 · Tenda
02.03.01.111_multi · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105778
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105778
vdb-entry
https://vuldb.com/vuln/413811
signature
https://vuldb.com/vuln/413811/cti
third-party-advisory
https://vuldb.com/cve/CVE-2026-105778
third-party-advisory
https://vuldb.com/submit/992587
exploit
https://github.com/raisecnull/Tenda-AC5v3-BOF/blob/main/blog.md
product
https://www.tenda.com.cn/
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