CVE-2026-4212
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Remote Stack-Based Buffer Overflow in D-Link Download Manager

Publication date: 2026-03-16

Last updated on: 2026-03-19

Assigner: VulDB

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.
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Meta Information
Published
2026-03-16
Last Modified
2026-03-19
Generated
2026-06-16
AI Q&A
2026-03-16
EPSS Evaluated
2026-06-15
NVD
CVE-2026-4212
EUVD
EUVD-2026-12286
Affected Vendors & Products
Showing 20 associated CPEs
Vendor Product Version / Range
dlink dnr-202l_firmware to 2026-02-05 (inc)
dlink dnr-326_firmware to 2026-02-05 (inc)
dlink dns-1100-4_firmware to 2026-02-05 (inc)
dlink dns-120_firmware to 2026-02-05 (inc)
dlink dns-1200-05_firmware to 2026-02-05 (inc)
dlink dns-1550-04_firmware to 2026-02-05 (inc)
dlink dns-315l_firmware to 2026-02-05 (inc)
dlink dns-320_firmware to 2026-02-05 (inc)
dlink dns-320l_firmware to 2026-02-05 (inc)
dlink dns-320lw_firmware to 2026-02-05 (inc)
dlink dns-321_firmware to 2026-02-05 (inc)
dlink dns-322l_firmware to 2026-02-05 (inc)
dlink dns-323_firmware to 2026-02-05 (inc)
dlink dns-325_firmware to 2026-02-05 (inc)
dlink dns-326_firmware to 2026-02-05 (inc)
dlink dns-327l_firmware to 2026-02-05 (inc)
dlink dns-340l_firmware to 2026-02-05 (inc)
dlink dns-343_firmware to 2026-02-05 (inc)
dlink dns-345_firmware to 2026-02-05 (inc)
dlink dns-726-4_firmware to 2026-02-05 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
Attack-Flow Graph
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Executive Summary

This vulnerability affects multiple D-Link devices and is related to the Downloads_Schedule_Info function in the /cgi-bin/download_mgr.cgi file. It is a stack-based buffer overflow vulnerability that can be exploited remotely by an attacker.

Impact Analysis

Exploitation of this vulnerability can lead to a stack-based buffer overflow, which may allow an attacker to execute arbitrary code remotely on the affected device. This can compromise the device's security, potentially leading to unauthorized access, data theft, or disruption of service.

Compliance Impact

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Detection Guidance

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