High severity · published Jul 21, 2025
CVE-2025-7913
A vulnerability, which was classified as critical, was found in TOTOLINK T6 4.1.5cu.748_B20211015
8.8
CVSS
1%
EPSS
No
On KEV
Description
A vulnerability, which was classified as critical, was found in TOTOLINK T6 4.1.5cu.748_B20211015. Affected is the function updateWifiInfo of the component MQTT Service. The manipulation of the argument serverIp leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TF
T6 Firmware · Totolink
v4.1.5cu.748_b20211015 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-7913
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-7913
Exploit
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/7.md
Exploit
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/7.md#poc
Permissions Required
https://vuldb.com/?ctiid.317028
Third Party Advisory
https://vuldb.com/?id.317028
Third Party Advisory
https://vuldb.com/?submit.618656
Product
https://www.totolink.net/
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