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D-Link DI-8003 buffer overflow in qos.asp wans parameter causes denial of service

Last refreshed2026-09-30

Status: UPDATED  |  Advisory ID: CVE-2025-50647

Key Details

CVECVE-2025-50647
CVSS Score / Version7.5 (High) / CVSS v3.1
Updated2026-07-25
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Proseattack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is none; availability impact is high.
Affected productsdlink di-8003_firmware
Classified asCWE-120 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'))

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
dlinkdi-8003_firmware
SubsystemsGeneral OT
SectorsMultiple

What to Know

A buffer overflow vulnerability exists in D-Link DI-8003 16.07.26A1, specifically in the handling of the wans parameter in the qos.asp endpoint.

What to Do

Monitor dlink's web page for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2025-50647
CVEhttps://www.cve.org/CVERecord?id=CVE-2025-50647
Vendor advisoryhttps://www.dlink.com/en/security-bulletin/