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Vulnerability record · CVE-2025-7952 · published 22 July 2025

CVE-2025-7952: Totolink t6 firmware injection vulnerability

TTotolink · T6 Firmware

A vulnerability classified as critical was found in TOTOLINK T6 4.1.5cu.748. This vulnerability affects the function ckeckKeepAlive of the file wireless.so of the component MQTT Packet Handler. The manipulation leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

2.1 CVSS 4.0 Low EPSS 21% · top 2.5% CWE-74 · InjectionCWE-77 · Command injection
2.1CVSS 4.0 base score, v2 6.5
21%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 classified as critical was found in TOTOLINK T6 4.1.5cu.748. This vulnerability affects the function ckeckKeepAlive of the file wireless.so of the component MQTT Packet Handler. The manipulation leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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/ElvisBlue/Public/blob/main/Vuln/7.md ExploitThird Party Advisory
https://github.com/ElvisBlue/Public/blob/main/Vuln/7.md#poc ExploitThird Party Advisory
https://vuldb.com/?ctiid.317098 Permissions Required
https://vuldb.com/?id.317098 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.619319 Third Party AdvisoryVDB Entry
https://www.totolink.net/ Product

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Related vulnerabilities

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

9.8CVE-2023-7221Totolink t6 firmware classic buffer overflow vulnerabilityA vulnerability was found in Totolink T6 4.1.9cu.5241_B20210923. It has been classified as critical. This affects the function main of the file /cgi-…EPSS 1.5%9.8CVE-2022-38828Totolink t6 firmware os command injection vulnerabilityTOTOLINK T6 V4.1.5cu.709_B20210518 is vulnerable to command injection via cstecgi.cgiEPSS 20%9.8CVE-2022-38823Totolink t6 firmware hard-coded credentials vulnerabilityIn TOTOLINK T6 V4.1.5cu.709_B20210518, there is a hard coded password for root in /etc/shadow.sample.EPSS 1.1%9.8CVE-2022-38826Totolink t6 firmware os command injection vulnerabilityIn TOTOLINK T6 V4.1.5cu.709_B20210518, there is an execute arbitrary command in cstecgi.cgi.EPSS 1.3%9.8CVE-2022-38827Totolink t6 firmware classic buffer overflow vulnerabilityTOTOLINK T6 V4.1.5cu.709_B20210518 is vulnerable to Buffer Overflow via cstecgi.cgiEPSS 12%9.8CVE-2022-25084Totolink t6 firmware os command injection vulnerabilityTOTOLink T6 V5.9c.4085_B20190428 was discovered to contain a command injection vulnerability in the "Main" function. This vulnerability allows attack…EPSS 25%9.8CVE-2022-25130Totolink t6 firmware command injection vulnerabilityA command injection vulnerability in the function updateWifiInfo of TOTOLINK Technology routers T6 V3_Firmware T6_V3_V4.1.5cu.748_B20211015 and T10 V…EPSS 2.2%9.8CVE-2022-25131Totolink t6 firmware command injection vulnerabilityA command injection vulnerability in the function recvSlaveCloudCheckStatus of TOTOLINK Technology routers T6 V3_Firmware T6_V3_V4.1.5cu.748_B2021101…EPSS 2.2%

Source: NIST National Vulnerability Database (record CVE-2025-7952), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.