Exploit Write-UpTechnical description
https://github.com/a-rey/exploits/blob/main/writeups/Inbit_Messenger/v4.6.0/writeup.md CVE-2023-54330
CRITICAL
Inbit Messenger 4.9.0 - Unauthenticated Remote SEH Overflow
Record summary
CVE-2023-54330 has a selected CVSS score of 9.3 (critical); EIP currently links 1 catalogued exploit.
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.
Description source: CVE List
Exploitation context
Available material
- Catalogued exploits
- 1
CISA SSVC decision
ExploitationPoC
AutomatableYes
Technical impactTotal
CISA Coordinator · SSVC 2.0.3 · Evaluated Jan 14, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
Inbit MessengerBrowse Inbit / Inbit Messenger | CVE List | 4.6.0 to ≤ 4.9.0 | affected |
Proofs of concept
1Catalogued exploits
ExploitDBInbit Messenger v4.9.0 - Unauthenticated Remote SEH OverflowExploitDB exploitby a-reyNot analyzed1 file
References
5nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2023-54330 Archived Software Download Pageproduct
https://web.archive.org/web/20200122082432/https://www.softsea.com/review/Inbit-Messenger-Basic-Edition.html ExploitDB-51126exploit
https://www.exploit-db.com/exploits/51126 VulnCheck Advisory: Inbit Messenger 4.9.0 - Unauthenticated Remote SEH OverflowThird-party advisory
https://www.vulncheck.com/advisories/inbit-messenger-unauthenticated-remote-seh-overflow