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Vulnerability record · CVE-2025-12209 · published 27 October 2025

CVE-2025-12209: Tenda o3 firmware1.0.0.10\(2478\) memory buffer overflow vulnerability

Tenda · O3 Firmware1.0.0.10\(2478\)

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.

7.4 CVSS 4.0 High EPSS 0.95% · top 40.4% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
7.4CVSS 4.0 base score, v2 9.0
0.95%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/noahze01/IoT-vulnerable/blob/main/Tenda/O3v2.0/setDhcpConfig.md ExploitThird Party Advisory
https://vuldb.com/?ctiid.329879 Permissions RequiredVDB Entry
https://vuldb.com/?id.329879 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.673263 Third Party AdvisoryVDB Entry
https://www.tenda.com.cn/ Product
https://github.com/noahze01/IoT-vulnerable/blob/main/Tenda/O3v2.0/setDhcpConfig.md ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.7CVE-2024-6964Tenda o3 firmware1.0.0.10\(2478\) stack-based buffer overflow vulnerabilityA vulnerability, which was classified as critical, was found in Tenda O3 1.0.0.10. Affected is the function fromDhcpSetSer. The manipulation of the a…EPSS 1.2%8.7CVE-2024-6965Tenda o3 firmware1.0.0.10\(2478\) stack-based buffer overflow vulnerabilityA vulnerability has been found in Tenda O3 1.0.0.10 and classified as critical. Affected by this vulnerability is the function fromVirtualSet. The ma…EPSS 1.3%8.7CVE-2024-6962Tenda o3 firmware1.0.0.10\(2478\) stack-based buffer overflow vulnerabilityA vulnerability classified as critical was found in Tenda O3 1.0.0.10. This vulnerability affects the function formQosSet. The manipulation of the ar…EPSS 1.2%8.7CVE-2024-6963Tenda o3 firmware1.0.0.10\(2478\) stack-based buffer overflow vulnerabilityA vulnerability, which was classified as critical, has been found in Tenda O3 1.0.0.10. This issue affects the function formexeCommand. The manipulat…EPSS 1.3%7.4CVE-2025-12214Tenda o3 firmware1.0.0.10\(2478\) memory buffer overflow vulnerabilityA vulnerability was detected in Tenda O3 1.0.0.10(2478). This issue affects the function SetValue/GetValue of the file /goform/sysAutoReboot. Perform…EPSS 0.74%7.4CVE-2025-12213Tenda o3 firmware1.0.0.10\(2478\) memory buffer overflow vulnerabilityA security vulnerability has been detected in Tenda O3 1.0.0.10(2478). This vulnerability affects the function SetValue/GetValue of the file /goform/…EPSS 0.74%7.4CVE-2025-12212Tenda o3 firmware1.0.0.10\(2478\) memory buffer overflow vulnerabilityA weakness has been identified in Tenda O3 1.0.0.10(2478). This affects the function SetValue/GetValue of the file /goform/setNetworkService. This ma…EPSS 0.74%7.4CVE-2025-12211Tenda o3 firmware1.0.0.10\(2478\) memory buffer overflow vulnerabilityA security flaw has been discovered in Tenda O3 1.0.0.10(2478). Affected by this issue is the function SetValue/GetValue of the file /goform/setDmzIn…EPSS 0.77%

Source: NIST National Vulnerability Database (record CVE-2025-12209), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.