What is the CVSS score of CVE-2023-54329?

CVE-2023-54329 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.5%.

Which versions of Inbit Messenger are affected by CVE-2023-54329?

Organizations using Inbit Messenger 4.6.0 - 4.9.0 face critical risk from CVE-2023-54329, a stack-based buffer overflow vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2023-54329?

Yes, a public proof-of-concept exploit is available for CVE-2023-54329. Prioritise patching immediately. EPSS: 0.5%.

How to fix or mitigate CVE-2023-54329?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

Inbit Messenger CVE-2023-54329

CRITICAL

Stack-based Buffer Overflow (CWE-121)

2026-01-13 disclosure@vulncheck.com

Stack Overflow Inbit Messenger

9.8

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 30, 2026 - 15:47 vuln.today

Public exploit code

CVE Published

Jan 13, 2026 - 23:15 nvd

CRITICAL 9.8

DescriptionNVD

Inbit Messenger 4.6.0 - 4.9.0 contains a remote command execution vulnerability that allows unauthenticated attackers to execute arbitrary commands by exploiting a stack overflow in the messenger's protocol. Attackers can send specially crafted XML packets to port 10883 with a malicious payload to trigger the vulnerability and execute commands with system privileges.

AnalysisAI

Inbit Messenger 4.6.0-4.9.0 has unauthenticated RCE through a stack overflow in the XML protocol on port 10883. PoC available.

Technical ContextAI

Specially crafted XML packets on port 10883 trigger a stack overflow (CWE-121) that enables arbitrary command execution with system privileges.

RemediationAI

Update Inbit Messenger. Restrict port 10883 access.

CVE-2023-54329 vulnerability details – vuln.today

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Inbit Messenger CVE-2023-54329

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code