PT-2026-25592 · D Link · Dnr-202L+38

Pjqwudi · Published 2026-03-16 · Updated 2026-03-16 · CVE-2026-4212

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 versions prior to 20260205

Description A security issue has been identified in multiple D-Link Network Attached Storage (NAS) devices. The Downloads Schedule Info function within the /cgi-bin/download mgr.cgi file is susceptible to a stack-based buffer overflow. This manipulation can be exploited remotely. The exploit for this issue has been publicly disclosed.

Recommendations D-Link DNS-120 versions prior to 20260205 D-Link DNR-202L versions prior to 20260205 D-Link DNS-315L versions prior to 20260205 D-Link DNS-320 versions prior to 20260205 D-Link DNS-320L versions prior to 20260205 D-Link DNS-320LW versions prior to 20260205 D-Link DNS-321 versions prior to 20260205 D-Link DNR-322L versions prior to 20260205 D-Link DNS-323 versions prior to 20260205 D-Link DNS-325 versions prior to 20260205 D-Link DNS-326 versions prior to 20260205 D-Link DNS-327L versions prior to 20260205 D-Link DNR-326 versions prior to 20260205 D-Link DNS-340L versions prior to 20260205 D-Link DNS-343 versions prior to 20260205 D-Link DNS-345 versions prior to 20260205 D-Link DNS-726-4 versions prior to 20260205 D-Link DNS-1100-4 versions prior to 20260205 D-Link DNS-1200-05 versions prior to 20260205 D-Link DNS-1550-04 versions prior to 20260205

Exploit

Fix

Buffer Overflow

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-121

CWE-787

Related Identifiers

CVE-2026-4212

Affected Products

Dnr-202L

Dnr-322L

Dnr-326

Dns-1100-4

Dns-120

Dns-1200-05

Dns-1550-04

Dns-315L

Dns-320

Dns-320L

Dns-321

Dns-323

Dns-325

Dns-326

Dns-327L

Dns-340L

Dns-343

Dns-345

Dns-726-4

Dnr-202L Firmware

Dnr-326 Firmware

Dns-1100-4 Firmware

Dns-1200-05 Firmware

Dns-120 Firmware

Dns-1550-04 Firmware

Dns-315L Firmware

Dns-320 Firmware

Dns-320L Firmware

Dns-320Lw Firmware

Dns-321 Firmware

Dns-322L Firmware

Dns-323 Firmware

Dns-325 Firmware

Dns-326 Firmware

Dns-327L Firmware

Dns-340L Firmware

Dns-343 Firmware

Dns-345 Firmware

Dns-726-4 Firmware

References · 10

• 🔥❌ https://github.com/wudipjq/my_vuln/blob/main/D-Link8/vuln_161/161.md · Exploit, Deleted
• https://nvd.nist.gov/vuln/detail/CVE-2026-4212 · Security Note
• https://twitter.com/CveFindCom/status/2033585049208074418 · Twitter Post
• https://dlink.com · Note
• https://twitter.com/ptdbugs/status/2033448289635369136 · Twitter Post
• https://vuldb.com/?id.351123 · Note
• https://vuldb.com/?submit.770442 · Note
• https://vuldb.com/?ctiid.351123 · Note
• https://t.me/CVEtracker/47483 · Telegram Post
• https://twitter.com/cyberbivash/status/2033421188345532913 · Twitter Post