Dlink DWR-X1820 router uses weak default password generated from its IMEI number and does not require users to change it. An attacker who knows how passwords are generated can easily crack the default password if they have the device IMEI number.

This issue was fixed in version 1.00B16CP.

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00016.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
D-Link Corporation DWR-X1820 unaffected
Version Status Constraints
1.00B14CP affected < 1.00B16CP

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://cert.pl/posts/2026/05/CVE-2026-4377 cve-icon cve-icon
https://www.dlink.com/pl/pl/products/dwr-1820-cp#support cve-icon cve-icon
History

Thu, 28 May 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 28 May 2026 10:15:00 +0000

Type Values Removed Values Added
Description Dlink DWR-X1820 router uses weak default password generated from its IMEI number and does not require users to change it. An attacker who knows how passwords are generated can easily crack the default password if they have the device IMEI number. This issue was fixed in version 1.00B16CP.
Title Use of Weak Credentials in D-Link DWR-X1820 router
Weaknesses CWE-1391
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published:

Updated: 2026-05-28T12:02:42.626Z

Reserved: 2026-03-18T12:46:23.457Z

Link: CVE-2026-4377

cve-icon Vulnrichment

Updated: 2026-05-28T12:02:30.146Z

cve-icon NVD

Status : Received

Published: 2026-05-28T10:16:39.940

Modified: 2026-05-28T10:16:39.940

Link: CVE-2026-4377

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-28T12:30:16Z

Weaknesses