CVE-2026-91001

CRITICAL 9.9

D-Link DI-8400 DDNS Configuration ddns.asp ddns_asp stack-based overflow

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121 CWE-119
Vendor	d-link
Product	di-8400
Published	Sep 15, 2026
Last Updated	Sep 15, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

D-Link / DI-8400

16.07

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/403582 vuldb.com: https://vuldb.com/vuln/403582/cti vuldb.com: https://vuldb.com/cve/CVE-2026-91001 vuldb.com: https://vuldb.com/submit/931642 github.com: https://github.com/Vivi-Xray/Xray-s-cve-/tree/main/ddns_asp github.com: https://github.com/Vivi-Xray/Xray-s-cve-/blob/main/ddns_asp/ddns_asp.py dlink.com: https://www.dlink.com/

Credits

🔍 Xray (VulDB User)