CVE-2023-54329: Inbit Messenger 4.9.0 - Unauthenticated Remote Command Execution (RCE)

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-01-13 · updated 2026-06-17
Weakness: CWE-121

Description

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.

Affected products

Inbit Messenger: from 4.6.0 through 4.9.0

References

https://github.com/a-rey/exploits/blob/main/writeups/Inbit_Messenger/v4.6.0/writeup.md
https://web.archive.org/web/20200122082432/https://www.softsea.com/review/Inbit-Messenger-Basic-Edition.html
https://www.exploit-db.com/exploits/51127
https://www.vulncheck.com/advisories/inbit-messenger-unauthenticated-remote-command-execution-rce
https://github.com/a-rey/exploits/blob/main/writeups/Inbit_Messenger/v4.6.0/writeup.md

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