Critical 9.9Published Sep 15, 2026

CVE-2026-91001D-Link DI-8400 DDNS Configuration ddns.asp ddns_asp stack-based overflow

Updated under an hour ago (2026-10-19 07:10 UTC)

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Every CVE for D-Link DI-8400

Exploited in the last 30 days

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.

CVSS: 9.9 CRITICAL (v3.1, CNA)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
Weakness (CWE): CWE-121, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Sep 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

D-Link DI-8400 d-link:di-8400	16.07	CNA record

References

https://vuldb.com/vuln/403582vdb-entry, technical-description
https://vuldb.com/vuln/403582/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-91001third-party-advisory
https://vuldb.com/submit/931642third-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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.