High severity · published Aug 10, 2025
CVE-2025-8810
Tenda AC20 SetFirewallCfg strcpy stack-based overflow
8.8
CVSS
1.1%
EPSS
No
On KEV
Description
A vulnerability classified as critical was found in Tenda AC20 16.03.08.05. Affected by this vulnerability is the function strcpy of the file /goform/SetFirewallCfg. The manipulation of the argument firewallEn leads to stack-based buffer overflow. The attack can be launched 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: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)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
AC20 · Tenda
16.03.08.05 · source: vendor
AF
Ac20 Firmware · Tenda
16.03.08.05 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-8810
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-8810
Exploit
https://github.com/LaiwanHundun/CVE/blob/main/cve1
Permissions Required
https://vuldb.com/?ctiid.319339
Third Party Advisory
https://vuldb.com/?id.319339
Third Party Advisory
https://vuldb.com/?submit.627394
Product
https://www.tenda.com.cn/
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