CVE-2023-54330
Inbit Messenger 4.9.0 - Unauthenticated Remote SEH Overflow
- State
- Published
- Severity
- 9.3 Critical
- Published
- Jan 13, 2026
- Updated
- Mar 5, 2026
- Reserved
- Jan 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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 | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-121 Stack-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
Inbit MessengerInbit |
|
References
- ExploitDB-51126exploit
- Archived Software Download Pageproduct
- Exploit Write-Uptechnical-description
- VulnCheck Advisory: Inbit Messenger 4.9.0 - Unauthenticated Remote SEH Overflowthird-party-advisory
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