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Vulnerability record · CVE-2025-10815 · published 22 September 2025

CVE-2025-10815: Tenda ac20 firmware memory buffer overflow vulnerability

Tenda · Ac20 Firmware

A vulnerability was identified in Tenda AC20 up to 16.03.08.12. Affected by this issue is the function strcpy of the file /goform/SetPptpServerCfg of the component HTTP POST Request Handler. Such manipulation of the argument startIp leads to buffer overflow. The attack can be launched remotely. The exploit is publicly available and might be used.

7.4 CVSS 4.0 High EPSS 0.83% · top 44.1% CWE-119 · Memory buffer overflowCWE-120 · Classic buffer overflow
7.4CVSS 4.0 base score, v2 9.0
0.83%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

Description

A vulnerability was identified in Tenda AC20 up to 16.03.08.12. Affected by this issue is the function strcpy of the file /goform/SetPptpServerCfg of the component HTTP POST Request Handler. Such manipulation of the argument startIp leads to buffer overflow. The attack can be launched remotely. The exploit is publicly available and might be used.

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/Juana-2u/Tenda-AC20 Not Applicable
https://vuldb.com/?ctiid.325173 Permissions RequiredVDB Entry
https://vuldb.com/?id.325173 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.654460 Third Party AdvisoryVDB Entry
https://www.tenda.com.cn/ Product

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Related vulnerabilities

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

7.4CVE-2025-15356Tenda ac20 firmware memory buffer overflow vulnerabilityA vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of the file /goform/PowerSaveSet. The man…EPSS 4.0%7.4CVE-2025-14656Tenda ac20 firmware memory buffer overflow vulnerabilityA weakness has been identified in Tenda AC20 16.03.08.12. This affects the function httpd of the file /goform/openSchedWifi. Executing a manipulation…EPSS 0.74%7.4CVE-2025-14655Tenda ac20 firmware memory buffer overflow vulnerabilityA security flaw has been discovered in Tenda AC20 16.03.08.12. The impacted element is the function formSetRebootTimer of the file /goform/SetSysAuto…EPSS 3.3%7.4CVE-2025-14654Tenda ac20 firmware memory buffer overflow vulnerabilityA vulnerability was identified in Tenda AC20 16.03.08.12. The affected element is the function formSetPPTPUserList of the file /goform/setPptpUserLis…EPSS 3.3%7.4CVE-2025-13258Tenda ac20 firmware memory buffer overflow vulnerabilityA vulnerability was detected in Tenda AC20 up to 16.03.08.12. The impacted element is an unknown function of the file /goform/WifiExtraSet. The manip…EPSS 0.74%7.4CVE-2025-11385Tenda ac20 firmware memory buffer overflow vulnerabilityA vulnerability has been found in Tenda AC20 up to 16.03.08.12. The affected element is the function sscanf of the file /goform/fast_setting_wifi_set…EPSS 0.80%7.4CVE-2025-10120Tenda ac20 firmware memory buffer overflow vulnerabilityA vulnerability was detected in Tenda AC20 up to 16.03.08.12. The impacted element is the function strcpy of the file /goform/GetParentControlInfo. T…EPSS 0.83%7.4CVE-2025-9791Tenda ac20 firmware memory buffer overflow vulnerabilityA weakness has been identified in Tenda AC20 16.03.08.05. This vulnerability affects unknown code of the file /goform/fromAdvSetMacMtuWan. This manip…EPSS 0.86%

Source: NIST National Vulnerability Database (record CVE-2025-10815), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.