Vulnerability Monitor

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CVE-2025-12240

A security vulnerability has been detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. This affects the function setDmzCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

Published

2025-10-27T07:15:39.633

Last Modified

2025-10-27T17:58:43.920

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

8.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-119
CWE-120
Type: Primary
CWE-120

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	totolink	a3300r_firmware	17.0.0cu.557_b20221024	Yes
Hardware	totolink	a3300r	-	No

References

https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDmzCfg.md Exploit, Third Party Advisory ([email protected])
https://vuldb.com/?ctiid.329910 Permissions Required, VDB Entry ([email protected])
https://vuldb.com/?id.329910 Third Party Advisory, VDB Entry ([email protected])
https://vuldb.com/?submit.673722 Third Party Advisory, VDB Entry ([email protected])
https://www.totolink.net/ Product ([email protected])