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Critical severity · published Aug 16, 2025
CVE-2025-9087
Tenda AC20 SetNetControlList Endpoint set_qosMib_list stack-based overflow
9.8
CVSS
1.2%
EPSS
No
On KEV
Description
A vulnerability has been found in Tenda AC20 16.03.08.12. This affects the function set_qosMib_list of the file /goform/SetNetControlList of the component SetNetControlList Endpoint. The manipulation of the argument list leads to stack-based buffer overflow. It is possible to initiate 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: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)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
AC20 · Tenda
16.03.08.12 · source: vendor
AF
Ac20 Firmware · Tenda
16.03.08.12 · source: NVD
Affected product
AC
AC20
Tenda
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9087
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9087
Exploit
https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetQosBand
Exploit
https://github.com/ZZ2266/.github.io/tree/main/AC20/formSetQosBand#poc-python-exploit-script
Permissions Required
https://vuldb.com/?ctiid.320355
Third Party Advisory
https://vuldb.com/?id.320355
Third Party Advisory
https://vuldb.com/?submit.632037
Product
https://www.tenda.com.cn/
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