CVE-2023-54330 CRITICAL

CVE-2023-54330: Inbit Messenger 4.9.0 - Unauthenticated Remote SEH Overflow

Vendor Inbit
Product Inbit Messenger
Weakness CWE-121
Published January 13, 2026
Last update March 5, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 13, 2026 CVE published
March 5, 2026 Record updated