CVE-2026-7750
Totolink N300RH POST Request cstecgi.cgi setMacFilterRules buffer overflow
- State
- Published
- Severity
- 8.7 High
- Published
- May 4, 2026
- Updated
- May 5, 2026
- Reserved
- May 3, 2026
Description
A vulnerability was detected in Totolink N300RH 3.2.4-B20220812. This vulnerability affects the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument mac_address results in buffer overflow. The attack may be launched remotely. The exploit is now public 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 |
|---|---|
N300RHTotolink |
|
References
- VDB-360925 | Totolink N300RH POST Request cstecgi.cgi setMacFilterRules buffer overflowvdb-entrytechnical-description
- VDB-360925 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #807204 | Totolink N300RH N300RH V3_Firmware V3.2.4-B20220812 Buffer Overflowthird-party-advisory
- https://lavender-bicycle-a5a.notion.site/TOTOLINK-N300RH-setMacFilterRules-34553a41781f809cb952cdcb71ce90d8exploit
- https://www.totolink.net/product
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