CVE-2025-7758

A vulnerability, which was classified as critical, has been found in TOTOLINK T6 up to 4.1.5cu.748_B20211015. Affected by this issue is the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component HTTP POST Request Handler. The manipulation of the argument ip leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/3.md	Exploit Third Party Advisory
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/3.md#poc	Exploit Third Party Advisory
https://vuldb.com/?ctiid.316748	Permissions Required
https://vuldb.com/?id.316748	Third Party Advisory VDB Entry
https://vuldb.com/?submit.615734	Third Party Advisory VDB Entry
https://www.totolink.net/	Product
https://github.com/AnduinBrian/Public/blob/main/Totolink%20T6/Vuln/3.md	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:totolink:t6_firmware:v4.1.5cu.748_b20211015:*:*:*:*:*:*:*

cpe:2.3:h:totolink:t6:3:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-07-17 22:15

Updated : 2025-07-23 20:58

NVD link : CVE-2025-7758

Mitre link : CVE-2025-7758

CVE.ORG link : CVE-2025-7758

JSON object : View

Products Affected

totolink

t6
t6_firmware

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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Affected by this issue is the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi of the component HTTP POST Request Handler. The manipulation of the argument ip leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used."}, {"lang": "es", "value": "Se ha detectado una vulnerabilidad clasificada como cr\u00edtica en TOTOLINK T6 hasta la versi\u00f3n 4.1.5cu.748_B20211015. Este problema afecta a la funci\u00f3n setDiagnosisCfg del archivo /cgi-bin/cstecgi.cgi del componente HTTP POST Request Handler. La manipulaci\u00f3n del argumento ip provoca un desbordamiento del b\u00fafer. El ataque puede ejecutarse en remoto. Se ha hecho p\u00fablico el exploit y puede que sea utilizado."}], "lastModified": "2025-07-23T20:58:43.130", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:totolink:t6_firmware:v4.1.5cu.748_b20211015:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "43CE0237-A087-41D7-9E63-ED62660C11BE"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:totolink:t6:3:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "61907F0F-5DE6-4E57-A938-263A6B6E53CE"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "[email protected]"}