D-Link DI-8400 DDNS Configuration ddns.asp ddns_asp stack-based overflow (CVE-2026-91001) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-91001

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

Answer in brief

CVE-2026-91001 records a Unknown severity vulnerability in D-Link DI-8400 DDNS Configuration ddns.asp ddns_asp stack-based overflow. The current sources do not mark it as known exploited. The current feed maps D-Link/DI-8400 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 15, 2026Source checked Sep 15, 2026First seen by HOL Sep 15, 2026Material review Sep 15, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps D-Link/DI-8400 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
D-Link/DI-8400generic	16.07	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for D-Link/DI-8400.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 15, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.