CVE-2026-8137
Totolink X5000R formDdns sub_458E40 buffer overflow
- State
- Published
- Severity
- 8.7 High
- Published
- May 8, 2026
- Updated
- May 8, 2026
- Reserved
- May 7, 2026
Description
A vulnerability has been found in Totolink X5000R 9.1.0u.6369_B20230113. This vulnerability affects the function sub_458E40 of the file /boafrm/formDdns. The manipulation of the argument submit-url leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed to the 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 |
|---|---|
X5000RTotolink |
|
References
- VDB-361926 | Totolink X5000R formDdns sub_458E40 buffer overflowvdb-entrytechnical-description
- VDB-361926 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #808863 | Totolink X5000R V9.1.0u.6369_B20230113 Stack-based Buffer Overflowthird-party-advisory
- https://github.com/Kiciot/cve/issues/4exploitissue-tracking
- https://www.totolink.net/product
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