Windows CVE-2023-54330
CRITICAL
Stack-based Buffer Overflow (CWE-121)
2026-01-13
disclosure@vulncheck.com
9.8
CVSS 3.1
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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
3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 30, 2026 - 15:48 vuln.today
Public exploit code
CVE Published
Jan 13, 2026 - 23:16 nvd
CRITICAL 9.8
DescriptionNVD
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.
AnalysisAI
Inbit Messenger 4.6.0-4.9.0 has a second stack buffer overflow in the network handler. SEH overwrite leads to shellcode execution on Windows. PoC available.
Technical ContextAI
Malformed network packets overflow a stack buffer (CWE-121), overwriting the Structured Exception Handler chain for code execution.
RemediationAI
Update Inbit Messenger.
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External POC / Exploit Code
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