Critical severity · published Oct 2, 2026
CVE-2026-104611
Tenda AC9 POST Request fast_setting_internet_set stack-based overflow
9.1
CVSS
0.5%
EPSS
No
On KEV
Description
A vulnerability was detected in Tenda AC9 15.03.02.13. Affected is an unknown function of the file /goform/fast_setting_internet_set of the component POST Request Handler. Performing a manipulation of the argument netWanType results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is now public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
AC9 · Tenda
15.03.02.13 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104611
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104611
vdb-entry
https://vuldb.com/vuln/412918
signature
https://vuldb.com/vuln/412918/cti
third-party-advisory
https://vuldb.com/cve/CVE-2026-104611
third-party-advisory
https://vuldb.com/submit/962720
exploit
https://github.com/ZaneBoden/CVEs/blob/main/Tenda-AC9-fast_setting_internet_set.md
product
https://www.tenda.com.cn/
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