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Vulnerability record · CVE-2025-9778 · published 1 September 2025

CVE-2025-9778: Tenda w12 firmware hard-coded password vulnerability

Tenda · W12 Firmware

A security vulnerability has been detected in Tenda W12 up to 3.0.0.6(3948). Affected is an unknown function of the file /etc_ro/shadow of the component Administrative Interface. The manipulation leads to hard-coded credentials. An attack has to be approached locally. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used.

0.9 CVSS 4.0 Low EPSS 0.14% · top 97.1% CWE-259 · Hard-coded passwordCWE-798 · Hard-coded credentials
0.9CVSS 4.0 base score, v2 0.8
0.14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

A security vulnerability has been detected in Tenda W12 up to 3.0.0.6(3948). Affected is an unknown function of the file /etc_ro/shadow of the component Administrative Interface. The manipulation leads to hard-coded credentials. An attack has to be approached locally. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used.

CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/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/August829/Yu/blob/main/58ead8e7e08bfb0e8.md Not Applicable
https://github.com/August829/Yu/blob/main/58ead8e7e08bfb0e8.md#steps-to-reproduce Not Applicable
https://vuldb.com/?ctiid.322080 Permissions RequiredVDB Entry
https://vuldb.com/?id.322080 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.640969 Third Party AdvisoryVDB Entry
https://www.tenda.com.cn/ Product
https://github.com/August829/Yu/blob/main/58ead8e7e08bfb0e8.md Not Applicable
https://github.com/August829/Yu/blob/main/58ead8e7e08bfb0e8.md#steps-to-reproduce Not Applicable

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Related vulnerabilities

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

8.7CVE-2025-4007Tenda w12 firmware memory buffer overflow vulnerabilityA vulnerability classified as critical was found in Tenda W12 and i24 3.0.0.4(2887)/3.0.0.5(3644). Affected by this vulnerability is the function cgi…EPSS 1.0%8.7CVE-2025-3820Tenda w12 firmware memory buffer overflow vulnerabilityA vulnerability was found in Tenda W12 and i24 3.0.0.4(2887)/3.0.0.5(3644) and classified as critical. Affected by this issue is the function cgiSysU…EPSS 13%8.7CVE-2025-3803Tenda w12 firmware memory buffer overflow vulnerabilityA vulnerability was found in Tenda W12 and i24 3.0.0.4(2887)/3.0.0.5(3644). It has been rated as critical. This issue affects the function cgiSysSche…EPSS 1.0%8.7CVE-2025-3802Tenda w12 firmware memory buffer overflow vulnerabilityA vulnerability was found in Tenda W12 and i24 3.0.0.4(2887)/3.0.0.5(3644). It has been declared as critical. This vulnerability affects the function…EPSS 1.1%8.7CVE-2025-3693Tenda w12 firmware memory buffer overflow vulnerabilityA vulnerability was found in Tenda W12 3.0.0.5. It has been rated as critical. Affected by this issue is the function cgiWifiRadioSet of the file /bi…EPSS 7.4%7.4CVE-2025-11549Tenda w12 firmware memory buffer overflow vulnerabilityA vulnerability has been found in Tenda W12 3.0.0.6(3948). The affected element is the function wifiMacFilterSet of the file /goform/modules of the c…EPSS 8.5%5.7CVE-2025-11550Tenda w12 firmware improper resource shutdown vulnerabilityA vulnerability was found in Tenda W12 3.0.0.6(3948). The impacted element is the function wifiScheduledSet of the file /goform/modules of the compon…EPSS 0.96%5.3CVE-2026-20316Cisco Secure Firewall Management Center static credentials allow unauthenticated loginCisco Secure Firewall Management Center (FMC) Software contains hard-coded credentials for a low-privileged account in its web interface. An unauthen…KEVEPSS 35%analysed

Source: NIST National Vulnerability Database (record CVE-2025-9778), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.