CVE-2025-12240
TOTOLINK A3300R cstecgi.cgi setDmzCfg buffer overflow
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 27, 2025
- Updated
- Oct 27, 2025
- Reserved
- Oct 25, 2025
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulDB |
| 3.1 | 8.8 High | 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 | VulDB |
| 3.0 | 8.8 High | 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 | VulDB |
| 2.0 | 9.0 High | AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
A3300RTOTOLINK |
|
References
- VDB-329910 | TOTOLINK A3300R cstecgi.cgi setDmzCfg buffer overflowvdb-entrytechnical-description
- VDB-329910 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #673722 | TOTOLINK A3300R V17.0.0cu.557_B20221024 Buffer Overflowthird-party-advisory
- https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDmzCfg.mdexploit
- https://www.totolink.net/product
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