Vulnerability details

CVE-2025-7837

Totolink T6

TOTOLINK T6 MQTT Service recvSlaveStaInfo buffer overflow

CVSS 4.0

8.7High

Official description

A vulnerability was found in TOTOLINK T6 4.1.5cu.748_B20211015 and classified as critical. Affected by this issue is the function recvSlaveStaInfo of the component MQTT Service. The manipulation of the argument dest leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulDB)	`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`
8.8High	3.1	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
8.8High	3.0	CVEProject cvelistV5 (CNA) (VulDB)	`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R`
9.0High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR`

Affected products

Vendor	Product	Versions	Source
Totolink	T6	4.1.5cu.748_B20211015	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/?id.316940 vdb-entrytechnical-description
https://vuldb.com/?ctiid.316940 signaturepermissions-required
https://vuldb.com/?submit.617572 third-party-advisory
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md related
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/4.md#poc exploit
https://www.totolink.net/ product

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Details

Published: 2025-07-19
Last updated: 2025-07-21
State: Published
Assigner (CNA): VulDB

Exploit prediction (EPSS)

1.28%

Probability of exploitation in 30 days

70.2%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Partial

Weaknesses (CWE)

CWE-120
Buffer Overflow
CWE-119
Memory Corruption