VulnerabilityAwaiting Analysis

CVE-2026-4377

Dlink DWR-X1820 router uses weak default password generated from its IMEI number and does not require users to change it.

MEDIUM 6.0EPSS 0.14%

Does this matter?

Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0: 6.0 MEDIUMCVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.14% probability · 4th percentile
CISA KEV: Not listed
Weakness: CWE-1391
Source: cvd@cert.pl

References

https://cert.pl/posts/2026/05/CVE-2026-4377
https://www.dlink.com/pl/pl/products/dwr-1820-cp#support

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.