Remote Stack-Based Buffer Overflow in Inbit Messenger by Inbit Technologies
CVE-2023-54330

9.3CRITICAL

Key Information:

Vendor

Inbit

Status
Inbit Messenger
Vendor
CVE Published:
13 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2023-54330?

Versions 4.6.0 to 4.9.0 of Inbit Messenger are vulnerable to a remote stack-based buffer overflow. Unauthenticated attackers can exploit this issue by sending specially crafted malformed network packets, potentially leading to arbitrary code execution. By manipulating the messenger’s network handler, attackers can overwrite the Structured Exception Handler (SEH), enabling them to execute custom shellcode on affected Windows systems. This vulnerability highlights the importance of securing network communication to prevent unauthorized access.

Affected Version(s)

Inbit Messenger 4.6.0 <= 4.9.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-54330 - Proof of Concept

CVE-2023-54330 - Proof of Concept

References

https://www.exploit-db.com/exploits/51126
exploit
https://web.archive.org/web/20200122082432/https://www.so...
product
https://github.com/a-rey/exploits/blob/main/writeups/Inbi...
technical-description

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

a-rey
.