PT-2026-2420 · Microsoft+1 · Windows+1

A-Rey · Published 2026-01-13 · Updated 2026-01-30 · CVE-2023-54330

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Inbit Messenger versions 4.6.0 through 4.9.0

Description A remote stack-based buffer overflow exists in Inbit Messenger that allows unauthenticated attackers to execute arbitrary code. This is achieved by sending malformed network packets to the messenger's network handler. Successful exploitation allows attackers to overwrite the Structured Exception Handler (SEH) and execute shellcode on vulnerable Windows systems.

Recommendations Update Inbit Messenger to a version later than 4.9.0.

Exploit

Fix

Stack Overflow

Memory Corruption

Weakness Enumeration

CWE-121

CWE-787

Related Identifiers

CVE-2023-54330

Affected Products

Inbit Messenger

Windows

References · 9

• 🔥 https://github.com/a-rey/exploits/blob/main/writeups/Inbit_Messenger/v4.6.0/writeup.md · Exploit
• 🔥 https://exploit-db.com/exploits/51126 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-54330 · Security Note
• https://osv.dev/vulnerability/CVE-2023-54330 · Vendor Advisory
• https://twitter.com/CVEnew/status/2011383043991154773 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2011277874662105525 · Twitter Post
• https://web.archive.org/web/20200122082432/https://softsea.com/review/Inbit-Messenger-Basic-Edition.html · Note
• https://vulncheck.com/advisories/inbit-messenger-unauthenticated-remote-seh-overflow · Note
• https://t.me/cveNotify/150415 · Telegram Post