D-Link DIR-890L up to 111b04 UART Port rgbin hard-coded credentials

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.10

Summaryinfo

A vulnerability was found in D-Link DIR-890L up to 111b04. It has been classified as critical. The impacted element is an unknown function of the file rgbin of the component UART Port. The manipulation leads to hard-coded credentials. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is traded as CVE-2025-8231. It is possible to launch the attack on the physical device. Furthermore, there is an exploit available. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Detailsinfo

A vulnerability, which was classified as critical, has been found in D-Link DIR-890L up to 111b04. This issue affects an unknown code block of the file rgbin of the component UART Port. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. Using CWE to declare the problem leads to CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. Impacted is confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-8231. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1110.001 according to MITRE ATT&CK.

The exploit is available at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-22822). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.8
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.8
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Hard-coded credentials
CWE: CWE-798 / CWE-259 / CWE-255
CAPEC: 🔒
ATT&CK: 🔒

Physical: Yes
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/26/2025 Advisory disclosed
07/26/2025 +0 days VulDB entry created
08/07/2025 +11 days VulDB entry last update

Sourcesinfo

Vendor: dlink.com

Advisory: github.com
Status: Not defined

CVE: CVE-2025-8231 (🔒)
GCVE (CVE): GCVE-0-2025-8231
GCVE (VulDB): GCVE-100-317819
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/26/2025 03:23 PM
Updated: 08/07/2025 01:13 AM
Changes: 07/26/2025 03:23 PM (57), 07/27/2025 04:23 PM (30), 07/27/2025 08:27 PM (1), 08/07/2025 01:13 AM (1)
Complete: 🔍
Submitter: nich0las
Cache ID: 18:FDD:40

Submitinfo

Accepted

  • Submit #622337: D-Link DIR-890L Versions up to DIR890LA1_FW111b04 Hard-coded Credentials (by nich0las)

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