Inbit MessengerApplication · Inbit

CVE-2023-54329

CRITICAL · 9.8 CVSS v3.1 Published 2026-01-13
Fix available
A fix is available. Upgrade to after 4.9.0 or later.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Inbit Messenger versions 4.6.0 through 4.9.0 suffer from an unauthenticated remote command execution vulnerability via a stack buffer overflow in the messenger's proprietary protocol. Attackers send specially crafted XML packets to port 10883 containing a malicious payload that overflows a stack-based buffer, allowing arbitrary command execution with system-level privileges.

MitigationRestrict network access to port 10883 immediately; if available, upgrade to a patched version beyond 4.9.0. If no patch exists, consider disabling the affected service or implementing application-layer filtering for XML traffic.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Inbit MessengerApplication
Affected:>= 4.6.0, <= 4.9.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed Inbit Messenger version
    Check the installed version of Inbit Messenger using system package management tools (dpkg, rpm, or the application's -v/--version flag) or locate it in installed programs
    Affected if The version is 4.6.0, 4.7.0, 4.8.0, 4.9.0, or any version within the 4.6.0 to 4.9.0 range
  2. Confirm port 10883 is listening
    Run 'netstat -an | grep 10883' or 'ss -tlnp | grep 10883' to check if port 10883 is open and listening for connections
    Affected if Port 10883 is open and accepting connections, indicating the vulnerable service is exposed
  3. Verify the proprietary protocol service is active
    Check if the Inbit Messenger service or daemon process is running, using 'ps aux | grep -i inbit' or checking service status via systemctl/systemd
    Affected if The Inbit Messenger service is running and the proprietary protocol (port 10883) is active
  4. Assess network exposure of port 10883
    Review firewall rules (iptables, ufw, or Windows Firewall) to determine if port 10883 is accessible from network segments beyond localhost
    Affected if Port 10883 is accessible from untrusted network segments or the public internet

You are affected if Inbit Messenger version 4.6.0 through 4.9.0 is installed AND the service on port 10883 is active and network-accessible.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to a release after 4.9.0
Interim mitigation

Restrict network access to port 10883 immediately; if available, upgrade to a patched version beyond 4.9.0. If no patch exists, consider disabling the affected service or implementing application-layer filtering for XML traffic.

Fix this in Inbit Messenger Scoped from the published advisory
  • Consultation4.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA4.0 h
26.0 hours of engineering $4,580
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,328.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2023-54329 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-54329 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data