CVE-2026-4212

| EUVD-2026-12286 HIGH
2026-03-16 VulDB
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
PoC Detected
Mar 16, 2026 - 14:53 vuln.today
Public exploit code
Analysis Generated
Mar 16, 2026 - 04:00 vuln.today
EUVD ID Assigned
Mar 16, 2026 - 04:00 euvd
EUVD-2026-12286
CVE Published
Mar 16, 2026 - 03:32 nvd
HIGH 8.8

Tags

D-Link Buffer Overflow Stack Overflow Dns 1550 04 Dns 343 Dns 726 4 Dns 325 Dns 1100 4 Dns 1200 05 Dns 120 Dns 340l Dns 320lw Dns 315l Dns 320 Dns 323 Dns 320l Dnr 202l Dns 327l Dnr 326 Dnr 322l Dns 321 Dns 345 Dns 326

Description

A security vulnerability has been detected in 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 up to 20260205. This affects the function Downloads_Schedule_Info of the file /cgi-bin/download_mgr.cgi. Such manipulation leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

Analysis

Stack-based buffer overflow in D-Link DNS NAS devices (DNS-120 through DNS-1550-04) allows authenticated attackers to achieve remote code execution via the Downloads_Schedule_Info function in /cgi-bin/download_mgr.cgi. Public exploit code exists for this vulnerability, and no patch is currently available. …

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Remediation

Within 24 hours: Inventory all D-Link NAS devices in production and identify which models are affected; isolate affected devices from untrusted networks and restrict admin access. Within 7 days: Implement network segmentation to limit NAS access to authorized users only, disable remote management protocols where possible, and deploy WAF/IPS rules to block exploitation attempts. …

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Priority Score

64
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +44
POC: +20

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CVE-2026-4212 vulnerability details – vuln.today
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