High severity · published Oct 27, 2025
CVE-2025-12209
Tenda O3 setDhcpConfig GetValue stack-based overflow
8.8
CVSS
1%
EPSS
No
On KEV
Description
A vulnerability was determined in Tenda O3 1.0.0.10(2478). Affected is the function SetValue/GetValue of the file /goform/setDhcpConfig. Executing a manipulation of the argument dhcpEn can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.
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)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
O3
O3 · Tenda
1.0.0.10(2478) · source: vendor
OF
O3 Firmware1.0.0.10(2478) · Tenda
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-12209
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-12209
Exploit
https://github.com/noahze01/IoT-vulnerable/blob/main/Tenda/O3v2.0/setDhcpConfig.md
Permissions Required
https://vuldb.com/?ctiid.329879
Third Party Advisory
https://vuldb.com/?id.329879
Third Party Advisory
https://vuldb.com/?submit.673263
Product
https://www.tenda.com.cn/
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