CVE-2023-54330 | THREATINT

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.

PUBLISHED Reserved 2026-01-10 | Published 2026-01-13 | Updated 2026-01-14 | Assigner VulnCheck

CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Stack-based Buffer Overflow

Product status

4.6.0 (semver)

affected

Credits

a-rey finder

References

github.com/...ain/writeups/Inbit_Messenger/v4.6.0/writeup.md exploit

www.exploit-db.com/exploits/51126 (ExploitDB-51126) exploit

web.archive.org/...review/Inbit-Messenger-Basic-Edition.html (Archived Software Download Page) product

github.com/...ain/writeups/Inbit_Messenger/v4.6.0/writeup.md (Exploit Write-Up) technical-description

www.vulncheck.com/...ger-unauthenticated-remote-seh-overflow (VulnCheck Advisory: Inbit Messenger 4.9.0 - Unauthenticated Remote SEH Overflow) third-party-advisory

cve.org (CVE-2023-54330)

nvd.nist.gov (CVE-2023-54330)

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