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CVE-2026-4377

Use of Weak Credentials in D-Link DWR-X1820 router

MEDIUM
6
CVSS Score
Published: May 28, 2026 at 09:02 AM UTC
Updated: October 26, 2026 at 11:10 AM UTC
1 product affected across 1 vendorDWR-X1820

Using DWR-X1820 by D-Link Corporation?

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Severity
MEDIUM6
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

DWR-X1820· D-Link
90%
1.00B14CP ≤ v < 1.00B16CP1.00B14CP
Affected range stops below 1.00B16CP, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Third Party Advisory
Source: cverecord
https://cert.pl/posts/2026/05/CVE-2026-4377
Product
Source: cverecord
https://www.dlink.com/pl/pl/products/dwr-1820-cp#support

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6MEDIUMCERT-PL
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-1391

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