CVE-2026-91001
D-Link DI-8400 DDNS Configuration ddns.asp ddns_asp stack-based overflow
- State
- Published
- Severity
- 9.4 Critical
- Published
- Sep 15, 2026
- Updated
- Sep 15, 2026
- Reserved
- Sep 14, 2026
Description
A security flaw has been discovered in D-Link DI-8400 16.07. This affects the function ddns_asp of the file /ddns.asp of the component DDNS Configuration. Performing a manipulation of the argument serv/user/host/wild/mx/bmx/cust/ip results in stack-based buffer overflow. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.4 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P | VulDB |
| 3.1 | 9.9 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 3.0 | 9.9 Critical | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/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 |
|---|---|
DI-8400D-Link |
|
References
- VDB-403582 | D-Link DI-8400 DDNS Configuration ddns.asp ddns_asp stack-based overflowvdb-entrytechnical-description
- VDB-403582 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-91001 | CVE Analysis and Reportthird-party-advisory
- Submit #931642 | D-Link DI-8400 16.07 Buffer Overflowthird-party-advisory
- https://github.com/Vivi-Xray/Xray-s-cve-/tree/main/ddns_asprelated
- https://github.com/Vivi-Xray/Xray-s-cve-/blob/main/ddns_asp/ddns_asp.pyexploit
- https://www.dlink.com/product
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