CVE-2023-54330

CRITICAL

Inbit Messenger 4.6.0-4.9.0 - Unauthenticated Remote Code Execution via SEH Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-54330. PoCs published by a-rey.

AI-analyzed exploit summary This exploit targets an unauthenticated remote SEH overflow vulnerability in Inbit Messenger versions 4.6.0 to 4.9.0. It uses a structured payload with a NOP sled, SEH overwrite, and encoded shellcode to achieve remote code execution.

Description

Inbit Messenger versions 4.6.0 to 4.9.0 contain a remote stack-based buffer overflow vulnerability that allows unauthenticated attackers to execute arbitrary code by sending malformed network packets. Attackers can craft a specially designed payload targeting the messenger's network handler to overwrite the Structured Exception Handler (SEH) and execute shellcode on vulnerable Windows systems.

Exploits (1)

exploitdb WORKING POC
by a-rey · pythonremotewindows
https://www.exploit-db.com/exploits/51126

This exploit targets an unauthenticated remote SEH overflow vulnerability in Inbit Messenger versions 4.6.0 to 4.9.0. It uses a structured payload with a NOP sled, SEH overwrite, and encoded shellcode to achieve remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Inbit Messenger v4.6.0 - v4.9.0
No auth needed
Prerequisites: Network access to the target · Target running vulnerable Inbit Messenger version
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4

Scores

CVSS v3 9.8
EPSS 0.0068
EPSS Percentile 47.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-121 CWE-787
Status published
Products (1)
inbit/inbit_messenger 4.6.0 - 4.9.0
Published Jan 13, 2026
Tracked Since Feb 18, 2026