Vulnerability record · CVE-2025-8231 · published 27 July 2025

CVE-2025-8231: Dlink dir-890l firmware hard-coded password vulnerability

Dlink · Dir 890l Firmware

A vulnerability, which was classified as critical, has been found in D-Link DIR-890L up to 111b04. This issue affects some unknown processing of the file rgbin of the component UART Port. The manipulation leads to hard-coded credentials. It is possible to launch the attack on the physical device. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

5.2 CVSS 4.0 Medium EPSS 0.69% · top 48.9% CWE-259 · Hard-coded passwordCWE-798 · Hard-coded credentials

5.2CVSS 4.0 base score, v2 7.2

0.69%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

5References, 1 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Dir 890l Firmware Dlink

References

Link	Tags
https://github.com/Nicholas-wei/bug-discovery/blob/main/dlink/dir890-hardcoded/dir890-hardcoded.md	Exploit
https://vuldb.com/?ctiid.317819	Permissions RequiredVDB Entry
https://vuldb.com/?id.317819	Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.622337	Third Party AdvisoryVDB Entry
https://www.dlink.com/	Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-8231), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.