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D-Link DI-series radius_asp buffer overflow via crafted RADIUS parameters causes denial of service

Last refreshed2026-09-30

Status: UPDATED  |  Advisory ID: CVE-2025-52222

Key Details

CVECVE-2025-52222
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 productssee table below
Classified asCWE-120 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'))

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
dlinkdi-8100_firmware
dlinkdi-8100g_firmware
dlinkdi-8004w_firmware
dlinkdi-8003g_firmware
dlinkdi-8003_firmware
dlinkdi-8500_firmware
dlinkdi-8200g_firmware
dlinkdi-8200_firmware
dlinkdi-8400_firmware
SubsystemsGeneral OT
SectorsMultiple

What to Know

D-Link DI-8003 v16.07.26A1, DI-8500 v16.07.26A1; DI-8003G v17.12.21A1, DI-8200G v17.12.20A1, DI-8200 v16.07.26A1, DI-8400 v16.07.26A1, DI-8004w v16.07.26A1, DI-8100 v16.07.26A1, and DI-8100G v17.12.20A1 were discovered to contain a buffer overflow via the rd_en, rd_auth, rd_acct, http_hadmin, http_hadminpwd, rd_key, and rd_ip parameters in the radius_asp function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request. (NVD)

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-2025-52222
CVEhttps://www.cve.org/CVERecord?id=CVE-2025-52222
Vendor advisoryhttps://www.dlink.com/en/security-bulletin/