NEOJAPAN ChatLuck Guest User insufficient granularity of access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in NEOJAPAN ChatLuck. The impacted element is an unknown function of the component Guest User Handler. Executing a manipulation can lead to insufficient granularity of access control. This vulnerability is handled as CVE-2025-54461. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in NEOJAPAN ChatLuck (the affected version unknown). It has been declared as problematic. This vulnerability affects an unknown part of the component Guest User Handler. The manipulation with an unknown input leads to a insufficient granularity of access control vulnerability. The CWE definition for the vulnerability is CWE-1220. The product implements access controls via a policy or other feature with the intention to disable or restrict accesses (reads and/or writes) to assets in a system from untrusted agents. However, implemented access controls lack required granularity, which renders the control policy too broad because it allows accesses from unauthorized agents to the security-sensitive assets. As an impact it is known to affect confidentiality. CVE summarizes:

ChatLuck contains an insufficient granularity of access control vulnerability in Invitation of Guest Users. If exploited, an uninvited guest user may register itself as a guest user.

The advisory is available at chatluck.com. This vulnerability was named CVE-2025-54461 since 09/02/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available.

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-2025-34738). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

Name

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: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (jpcert): 🔒

CVSSv2info

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

Exploitinginfo

Class: Insufficient granularity of access control
CWE: CWE-1220 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

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

09/02/2025 CVE reserved
10/16/2025 +44 days Advisory disclosed
10/16/2025 +0 days VulDB entry created
10/16/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: chatluck.com
Status: Confirmed

CVE: CVE-2025-54461 (🔒)
GCVE (CVE): GCVE-0-2025-54461
GCVE (VulDB): GCVE-100-328786
EUVD: 🔒

Entryinfo

Created: 10/16/2025 11:13
Updated: 10/16/2025 12:22
Changes: 10/16/2025 11:13 (73), 10/16/2025 12:22 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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