CVE-2025-8231: D-Link DIR-890L UART Port rgbin hard-coded credentials

Severity: medium (CVSS 6.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-07-27 · updated 2026-06-17
Weakness: CWE-259

Description

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.

Affected products

D-Link DIR-890L: through 1.11b04

References

https://github.com/Nicholas-wei/bug-discovery/blob/main/dlink/dir890-hardcoded/dir890-hardcoded.md
https://vuldb.com/?ctiid.317819
https://vuldb.com/?id.317819
https://vuldb.com/?submit.622337
https://www.dlink.com/

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